Tube tester meter repair. When plugged in the tester AC Indicator light turned on.

Tube tester meter repair TV-7D/ more U, specifications are the same is 200uA full scale. I don't consider myself a bonafide expert on the calibration or repair of the these testers and I ain't no engineer. Hickok Tube Tester Sales, New Meters, Repair, Calibration, and Customization. It appears to be in good working order. Find Your Tube Tester on eBay! The B&K 707 tube tester dates from the late 1960s into the 1970s. The prices of vintage tube testers have risen to levels unimaginable just a few years earlier. Thank you for looking if you have any questions please feel free to ask. The tester works and the meter is good and it is complete with partial 707 tube chart and is missing the plate/grid cap cable. The tester is being sold as is for parts or repair untested. The only issue is that the meter &quot;sticks&quot; and won't zer… This article will discuss repair and calibration of the NRI Professional model 70 tube tester. Opening the box displays the condition of the unit. Any ways, here is the link of the exact same meter for a king's ransom. With the tester at rest, meter facing up, adjust the small flat plastic screw at the base of the meters needle so that the meter rests exactly at 0. It may be beyond repair at this point, no idea what the previous owner tired to do in here. Including TV-7 TV-7A/ U. <P Resources (TV-7 and TV related) Dan Nelson (new e-mail!) is one of the best known TV-7 experts. I'm not concerned with the battery capability. 10 likes. This correlation assures you of proper indications for evaluating all tubes according to standard rating systems when you test them on your Simpson Tube Tester Model 1000. Feb 5, 2011 · If it seems to be working right, leave it be. After 50-60 years Tube Tester Repair and Testing (Hickok Circuit) Western Electric KS-15560-L1 Zenwizard Studios 3. Its versatility, ease of use, and affordability make it a great value for the money, and its durability ensures that it will last for years to come. Thank you for your time Aug 31, 2020 · Need a current source for repair of the main meter from a Hickok 539B tube tester. ” – page 4. Good for TV repair. Meter circuit is working ok, as it tests rectifier and all diode tubes very well. We repair, restore, and calibrate classic tube testers for collectors and enthusiasts. I didn't have much knowledge about tube testers. Highly recommended. Free shipping on many items | Browse your favorite brands | affordable prices. I thought an old tube tester is like an old multi meter. The only problem is, Hickok is known for lousy meters. If i junk something, oh well, i'm sure i learned out of the experience, so it doesn't bother me a whole lot. com. Thanks. Sencore Mighty Mite solid-state tube testers (TC28 Hybrider, TC162, and TC154) are durable, easy-to-use, and test a wide variety of modern tubes (including modern sweep tubes such as #8950). It is evident that there will be some wood work Expert repair and restoration of vintage radios and vacuum tube testers in Georgetown, Texas. Hickok tube tester meters, repair, calibration, customization, and sales This article discusses repair and calibration of the Hickok 6000 tube tester. Mr Daniel replaced the main meter with a much more precise digital meter from hollowstate devices it has a special feature when you press the red button under the meter it displays a measurement for plate current from the tube under test, this excellent feature makes tube matching a breeze. SECTION I - INTRODUCTION & ACKNOWLEDGMENT Anyone with a serious interest in vintage radio repair and restoration needs a quality tube tester. Needle is almost pegged full left. It is a great help when you know how a particular tester works, and you know what you are doing. This article discusses repair and calibration of the Signal Corp I-177 tube tester. When you are here, you are probably are interested in tube testers in some way. I've been repairing tube radios, audio amps Explore a variety of tube testers including Hickok 800K, TV-7 D/U, and Westinghouse 978. Hickok Meters, Kirkland. Tube Tester parts Tube Tester Service, HICKOK & Triplett Tube Tester service & calibration : Paul Hart Tube tester roll chart reproductions (specializing if reproducing continuous roll charts for Hickok tube testers). Also a few other tips. com Jul 25, 2006 · The B&K 707 is a transconductance type tube tester. Feb 21, 2023 · A further reference that looks of interest, found on Amazon: How to Use, Calibrate, Repair and Upgrade Vacuum Tube Testers by Igor S. Faulty This handsome Precision Model 10-12 "Tube Master" tube tester looks like new and works like it, too. 25v and can'… Sep 15, 2003 · Do anyone know where can I get rewire my 1960 tube tester's voltmeter, is it very expensive? Thanks for the help and information. Perfect for audio enthusiasts. All adjustments work great except setting the bias voltage. If you don't have exactly 120 volts, all the voltages going to the tube you are testing will be off and so will your measurements. Mar 21, 2004 · I have a Hickok 539A tube tester which I have used for about 25 years. Then I tap on the face of the meter and it moves, but not at zero. We have some pro-made custom cases for the larger Hickok tube testers e. I'm only getting 1. There really is no "calibration" of a tube tester- it is a tester and not a measurement instrument. These 3 pages will tell you all you need to know about this 600A, and has equivalent Gm test results as compared the 539C. It comes with a DVD that includes the manuals, foreign and obsolete tube data, Western Electric tube Jan 18, 2006 · Tube testers are very critical of the voltage coming into them from the wall, that's why this is adjustable. The tube filaments light up so the transformer must be o. Models 6000A and 6005 are the same with only minor feature differences that are not relevant to tube test calibration, therefore the discussion is applicable to those models as well. Apr 15, 2010 · Tube Tester Repair and Calibration Tube tester calibration and repair of Hickok, Western Electric, Precision, B&K, Sencore, Triplett and other brands of tube testers. Jun 9, 2021 · Posted in classic hacks, hardware Tagged recapping, repair, restoration, tube tester, vacuum tube, vintage hardware ← Improved Technique For Resistive Divider Keypads Nov 25, 2024 · Repairing Vacuum Tube Testers Vacuum tube testers can encounter several issues requiring repair. TV-7C/ U. For 99% of things, it is plenty. How to replace original Hickok meter and install a new meter on a Hickok tube tester. Dave Igor S. Same as me! I remember very well how I threw away a shoe box full of used ECC81, many Mullard and Philips, using a defective tester (in 1988) and they tested all in the '?' range. In case you have a problem with the meter itself, and when you are not too much in a hurry, you might be able to dig up another meter, and then just replace the scale. If the price is right it is a good tester. This book is an excellent reference for tube tester users interested in the getting the most performance from their service tube testers. , Tube Tester Manuals and Test Data are available for B&K, EICO, Hickok, Mercury, Precision, Sencore, Stark, Triplett, Western Electric. As you can see in the photo's, this tester looks almost brand new. Line adjustment control changes the intensity of the power lamp and the needle moves maybe 1/8th inch TV-7 TV-7A/U TV-7B/U TV-7C/U TV-7D/U tube tester meter (replica) NEW one. We ship in 1-3 business days. Pilot light is on. Another post on the Internet produced information about the meter resistance values for the TV-3 and TV-10 tube testers, but not the TV-7. This is a description of the repair, restoration and calibration services provided. Recommendation: If you are a tube enthusiast looking for a reliable and accurate tube tester, the TV-11 Superior Tube Tester is a great option to consider. Aug 23, 2024 · Re: The cost to repair a TV-7 tube tester by Conelrad » Sat Aug 24, 2024 4:38 pm I love my TV-7D, one of the last ones made in the late 80's. Tube Tester Repair and Calibration - Vacuum Tube Testers. It does not light up the tubes (suddenly happened yesterday). Well, the thing appears to work for the most part, except for the line adjust Aug 23, 2010 · On the 6BN8 tube I get the following voltages, referenced to the chassis, with no added test resistors: Emissions Test Button pressed - meter reads 60, should be 0: Nov 24, 2007 · The owner led me to believe that it was working, but you guessed it, the meter didn’t move at all. The new meter has a glass lens that eliminates the static problem inherent with the original Hickok meters. Regarding the topic of Tube Matching using a Dynamic Conductance tester, Simpson writes: Feb 3, 2025 · Hello members. Flips to max with just a tiny bit of AC. The Series 10-12 Tube-Master is simple push button, master-lever type operated Vacuum tube and battery tester, incorporating the Electronamic Master tube testing circuit, designed by Precision engineers to indicate the overall performance merit of a vacuum tube in only one direct meter reading. How do I repair/lubricate it? Thanks! Top smithdoor Post subject: Re: tube tester meter repair Posted: Feb Wed 22, 2023 5:55 am Member Joined: Feb Mon 20, 2017 6:21 pm Posts: 2421 Location: Clovis, CA Axtman Jan 27, 2025 · The meter in my old Eico tube tester has issues from way before I ever bought it. It will also discuss the procedure to eliminate the 1S5 tube from models 648 and 648A. Bill Waters has been doing professional calibrations of all Hickoks for some time and is well known as the 'Hickokdoc' in U. after replaceing electrolytic cap's & checking the resistor's & diode's for the bias circuit and transformer voltage and all checking o. I recently obtained a nice clean Sylvania model 220 tube tester. Serious electrical voltages are present, repairs should only be attempted by a qualified technician. Someone had… Flat Rate Shipping for Tube Testers and New MetersContact Us zz@hickokmeters. I bought it for $10 from a guy whose basement was crammed with tubes—thousands and thousands of tubes. The best tube tester is the amp it's going to be living in. This is a new product, the size and the same specifications and original meter, test values accurate than the original meter, because the original meter has over 30 years or Frequency Power Meters Gas Testers Impedance & LCR (QZ) Meters Logic Analyzers Manuals & Books Meters Network Analyzers Optical Test Equipment Oscilloscopes Parts, Accessories & Plug-Ins Power Supplies Probes Radiation Testers Reflectometers Satellite and Radar Test Signal Sources & Generators Sound & Audio Measurement Spectrum Analyzers Jan 25, 2017 · So, I was trying to "fix" my Hickok 6000A tube tester and I put a multimeter across the leads of the meter. Familiarity with common problems can streamline your troubleshooting process. With a Simpson meter in the 600A, I'm in seventh heaven! You got a tube tester on the fritz, send it to Jeff. That about wraps up all that I can share with you regarding Hickok tube tester trouble shooting. Model TV-11 by Superior Instrument Company (SICO). All TV-7 tube tester can be used. The meter was pegged to the right and tapping wouldn't dislodge it. Nov 15, 2021 · I don't work on tube gear much, but have three different Hickok testers all with problems. I have a beautiful Weston 983 tester, but it takes longer to set up the test and get the in-depth condition of the TUT. It recently quit working, with nothing but faint meter jitters when testing transconductance. For most people, they are a very good choice. Replaced the cap and a handful of resistors. Good source for expert repair, calibration and parts for TV-7 and other testers. There is probably an estimation method, same as with Mk1…4, so making a calibration tube with the tester itself, but there is a big risk, any errors with the tester, become part of your calibration, and you will not be able to see this. Not very accurate, but I only Aug 3, 2008 · I found this sorry excuse for an Avo tube tester a while ago. . TV-7 Tube Tester Calibration, Repair, and Service - a Practical Guide - Part 2 Hickok 600A Tube Repair, Test and Failed attempt at calibration. A small hairline sliver proved to be the culprit and all seemes well after replacing the paper caps and cleaning and calibrating. Edited February 23, 2023 by Collux Jun 29, 2015 · Login Hello Guest, Please feel free to join us! There are many more parts of the Phorum that only members can see. I found the meter didn't have the original sensitivity any more. i have the voltage down to -38 volts from - 44 volts, according to Digging through the Tech Manual on the TV-7 failed to yield a resistance value. Gave it a thorough cleaning. TV-7B/ U. Jan 15, 2013 · I have this tube tester that i picked up online. Unlike the 700/707, this tester is totally solid state. Upon testing the meter with a 10K ohm resistor in series with a power supply, the pointer started to move with Jul 21, 2011 · I have a B&K 747 tube tester & went to do a calibration following the direction's in the instruction manual for the tube tester. Identifying Common Problems Some of the frequent issues with vacuum tube testers include: Power Supply Failure: Lack of power or inconsistent readings can indicate issues with the transformer or power circuit. There is a 200uf capacitor across the meter and it might be shorted. This article will discuss repair and calibration of the Jackson 648-series tube tester. Sep 13, 2021 · Author Topic: TV-7B/U Vacuum Tube Tester Meter reading 120 on 6L6 Tube (Read 1100 times) 0 Members and 1 Guest are viewing this topic. 8K subscribers Subscribed I adjust the little screw on the face and it does not move the needle. email Peter directly (by clicking on link) as he has no web site Vacuum Tubes West-Tech Services: a variety of service offered Oct 24, 2009 · I have a Hickok 600a tube tester. The original Mk4 meter has no internal damping and the damping comes from an internal capacitor, which is electrolytic, and is often dried up. Tester powers up now but no meter movement. Hickok 600A Mutual Conductance Tube Tester Calibrated &amp; Clean - Ready to Use Please see pictures 5, 6, and 7 for the calibration report and other important information. I'm not afraid to rip start apart and put it back together. More specifically, the calibration and repair of various models of US military tube testers. Generally the old meter is not resistant against operator errors, and precautions inside the tester are not sufficient. Those parts ended up being close to a thousand NOS vacuum tubes, mostly types for radios, and this tube tester. Here are some random thoughts Vintage Lafayette TE-15 Tube Tester Meter For Parts Or Repair Untested. A 2024 update that includes discussion around using Solid State rectifiers in a TV-7, new tips to help ease the calibration process, and enhanced instructions to calibrate your TV7 style tube tester. When plugged in the tester AC Indicator light turned on. Disconnect the meter from the tester and test its resistance by itself. On small signal tubes, on max scale, it won't always Feb 3, 2025 · Tube tester repair in Canada Page 1 of 1 [ 13 posts ] Page 1 of 1 [ 13 posts ] Board index » General Audio Discussion » Tubes All times are UTC Dec 7, 2017 · I just bought this tester and replaced the electrolytic caps. and Weston. The new meter will be smooth and will not hit hard on the overthrow and returning to zero like the original Hickok meter. The meter was exposed to the voltage of the DMM and doesn't work any more. Sep 22, 2024 · The first vacuum tube that I tested following the repair was a 6BF6 (triode and dual diode), using the user manual and supplementary tube chart – both it and the tester seemed to work OK. Feb 22, 2023 · I recently bought an old Heathkit TC-2 tube tester. D The meter for this tester is a 280uA Full Scale Hickok meter, type 66. Regardless of model, all the Mighty Mite solid-state Oct 7, 2013 · Does anyone know a way (such as a measurement check of some sort) to determine whether a Hickok tube tester meter is OK or not? My Hickok 536 reads Gm too high (2x or higher than it should) often pegging to the right even on max scale. Ouch. Hickok Tube Tester New Meter Installed and works much better than the original. Without a tube tester, it is very difficult to determine the condition of vacuum tubes (most of which are decades old and likely in used condition), which are the key components of vintage radios. Jan 27, 2025 · Hi all, I recently obtained an early vacuum tube tester (Radio City Products 314 model). Most testers I have come across have given no trouble over their 50+ years of service, but there is always that one ‘dog’ to contend with. Then I am supposed to push in the P7 button and adjust the "line adjust" knob until the meter reaches the centered "line Inside view of the RCA TMV-122B oscillograph, the CRT is an early 3" 906 clear bulb. I am having trouble with the first part of calibration, though. I have Daniel Schoo's pdf. This one came with everything, though in considerable disrepair. I didn't expect the Tolex to be perfect as a piece Jun 25, 2018 · Today begins an awesome restoration project, one of the greatest consumer grade tube testers available the Hickok 6000 series. So, I was wondering if anyone knew: 1) a way to fix the meter Oct 1, 2022 · Does anyone know the specs for the meter used in the B&k 650 tube tester? I am looking to replace it with a similar meter and I can't find out the resistance of the coil or the full scale current. The tube tester cleaned up really well, and I’m very pleased with it! RCP Model 314 following restoration. I don't have time to mess around with them, so looking for recommendations on someone to repair and calibrate one for reliable service. Next, insert the gold pins of the provided 10K resistor into socket 1 / pins 2 and 5. I can't find any markings on the meter. Jan 15, 2019 · If you can find a tube that is stable and has the same transconductance (or almost the same) over a fairly wide range of operating conditions, it could be useful for roughly checking the calibrations of other tube testers, but expecting it to be suitable for precise calibration of a quality tube tester is unrealistic unless it was calibrated on Sep 8, 2017 · Login Hello Guest, Please feel free to join us! There are many more parts of the Phorum that only members can see. Download BK PRECISION MODEL 747 TUBE TESTER service manual & repair info for electronics experts This article discusses repair and calibration of the older tube-based Sencore Mighty Mite tube testers that use the 12AU7A tube inside, models TC130, TC136, and TC142. Popovich's fantastic book, "How to Use, Calibrate, Repair and Upgrade Vacuum Tube Testers" is still available from the best book sources. Possible take the other two in on trade. There are some really great modifications described in this book. This article discusses repair and my calibration procedure of the Precision model 10-12 tube tester. Apr 28, 2025 · The schematic indicates the meter should read 100 Ohms resistance and 1mA current is full scale. Bringing classic electronics back to life since 2010. We also share a few note Nov 10, 2018 · Relative to tube tester meters in particular but probably applicable to most conventional panel meters, my Hickok 539B DC bias meter had been giving me troub… We can supply you new build meters though - we have a solution. Jun 25, 2018 · Today begins an awesome restoration project, one of the greatest consumer grade tube testers available the Hickok 6000 series. g 539B/C, and will continue to make the smaller cases for testers the size of a 6000A. It will need calibration and service to test accurately. Does anyone know a reputable shop that can repair tube testers in Canada? I have a Marconi MU-101 tester. k. The meter was damaged when I purchased it as-is. Review HICKOK Tube Tester Repair Ham Radio Military 6sn7 Amplifier Guitar The Hickok 600A tube tester is a highly sought-after piece of equipment in the world of ham radio, military, and audio repair. S. Jun 19, 2020 · Metrix 310B tube tester Meter replacement Vintage Test Gear and Workshop Equipment Jan 19, 2005 · I recently obtained a nice clean Sylvania model 220 tube tester. Meter seems to still work because the line adjust still works. I do some Military tube testers, but I don’t do Cardmatic tube testers. Full of dust, oil and some sort of grease it looked and felt… May 26, 2025 · HICKOK 539C TUBE TESTER LATE MODEL S/N 523-00149 ORIGINAL BIAS DC METER Get the best deals on Tv 7 Tube Tester when you shop the largest online selection at eBay. It is evident that there will be some wood work repairs and inspection long before electronics work. Richardson tubes in it, even. There are some light scratches on the tester. From the schematic, this appears to be the meter’s current shunt. Fortunately, I kept notes when I was discharging the capacitor through the meter in my first repair attempt. It does have listings for the tubes you have listed but nothing for the older tubes. You'd be far better served by learning theory of how tube amps (and other passive electronic components) work, how to read schematics, and how to troubleshoot using basic tools. I traced the problem with the meter to a wire-wound wooden spool inside the meter housing. Jun 16, 2014 · I purchased a Military TV3-B/U tube tester at our SARS swap meet this weekend and knew beforehand that there was a problem with the panel meter. The term “English” when used with tube testers refers to an English-reading Good/Replace scale on a tube tester quality meter, rather than a scale that reads in micromhos. Precise Tube Tester Model III Video #15 - Calibration Correction and Meter Repair Jim's Radio Shop 16K subscribers Subscribe Hickok 539C Tube Tester, Digital Meters, Solid State - Clean & *Calibrated* Out of stock Quick View Free Shipping in USA meter)! This Hickok 600A tube tester, has a brilliant design. Testing some vacuum tubes. Here are some random thoughts Here is a working B&K 700 tube tester for parts or repair. Here, we take a look at a tube tester I picked up at an antique store for $10. It was stored in a car work shop. It needed way over 300uA for full scale. It has obviously been stored in a very damp area and it has t Switches, levers, potentiometers, meter, tube sockets, transformer, front panel, case and so forth are not included - these parts come from your tester (have to say it as someone will ask) Tube tester calibration Last Update: 04/26/2024 08:14:10 General information about tube tester calibration Sorry for the large text content but if you intend to calibrate a tube tester, it is interesting reading ALL of this here, it can save you a lot of trouble. Eric Today begins an awesome restoration project, one of the greatest consumer grade tube testers available the Hickok 6000 series. Explore our Tube Tester Restorations. Popovich Amazon submitted reader comments for this and the previously mentioned: Make your own Tube Tester and Electron Tube Equipment by Gary Steinbaugh Make for interesting background reading. Some light altreantion is required with a new meter to replace an original Hickok meter. My manual is stamped August 1969, and a modern tube data setup chart dates 1978. Aug 8, 2018 · Precision 10-12 tube tester was DOA when I received it. Tube testers their owners could not give away Tube tester calibration Last Update: 04/26/2024 08:14:10 General information about tube tester calibration Sorry for the large text content but if you intend to calibrate a tube tester, it is interesting reading ALL of this here, it can save you a lot of trouble. I had the tube tested and its good. BG129 - How to fix one of the causes of Line Set issues on the TV7 series tube testers. Aug 24, 2015 · The remaining possibility is the meter movement itself. High voltages are present, repairs should only be attempted by a qualified technician. This tester only checks more modern tubes and is not recommended for antique radio repair. I am at the beginning steps of calibration where you power on the unit for 5 minutes, then set the switches. Opened it up and used a rubber bulb syringe "puffer type" blower and placed some sticky tape on a small plastic core adjuster tool. The B&K 747 is a transconductance type tube tester that does a decent job of testing many of the newer tubes. Sencore TC28 Hybrider Sencore TC162 Sencore TC154 They were VERY popular among old-timer technicians. <P Sep 25, 2017 · How to Use, Calibrate, Repair and Upgrade Vacuum Tube Testers The revival of tube technology in guitar and audiophile amplifiers has also led to the renewed interest in vacuum tube testers and their ultimate purpose, testing and matching of audio tubes. The decals on the tester are rubbing off. uaiu degw jfvhr kapcys emxs hlcelu pmkof zudep sbr xocstc jvifct bxyugnz athvm tbfvvad njt