Corrosion Damage ¨C TM500 Plugins
I have some TM-500 plugins that have been stored for a number of years in the garage in what I thought was a safe plastic storage container that is almost fully sealed from the atmosphere. To my
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christopherbath@...
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#180427
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Re: Message from your fearless (foolish?) leader
Hang in there Dennis, we'll try to behave. Prayers and good vibes to Marian. Vince.
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Vince Vielhaber
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#180426
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Re: Message from your fearless (foolish?) leader
Best recovery for Mrs. Marian! =D Tell her that even people far away as Brazil is wishing her a good recovery =D ---8<---Corte aqui---8<--- http://www.tabajara-labs.blogspot.com
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Alexandre Souza
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#180425
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Re: Message from your fearless (foolish?) leader
Hi Dennis, Please convey my best wishes to Marian for a speedy recovery! --Tom -- Prof. Thomas H. Lee Allen Ctr., Rm. 205 350 Jane Stanford Way Stanford University Stanford, CA 94305-4070
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Tom Lee
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#180424
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Re: Message from your fearless (foolish?) leader
Dennis, I am glad all went well. You and your family are in my prayers with special well wishes for Marian. GOD Bless and Thanks, rich!
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Richard R. Pope
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#180423
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Message from your fearless (foolish?) leader
Last Tuesday afternoon, Mar 9, for some unexplained reason Groups.io began sending me messages that emails addressed to me from the groups.io groups I belong to were bouncing. That came in to my InBox
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Dennis Tillman W7pF
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#180422
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Re: I built a TM500 mainframe tester, and updated the design. Someone might find this useful?
I just checked my TM501 (Not TM501A) modules, all four of them in my collection have Q12 on the left, Q10 on the right. I also just plugged my tester module in to each and the +15 and -15 LED's lit ok
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Jared Cabot
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#180421
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Re: 475B intermittent horizontal
Great News! Glad it was a simple fix. Those are the best. -- Michael Lynch Dardanelle, AR
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Michael W. Lynch
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#180420
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Re: 475B intermittent horizontal
I have cleaned all the switches and viola, all nice and dandy!! Thank you guys! The only problem remains the faulty 100x divider module in the attenuator of the 2nd channel. I bought new one some time
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Ondrej Pavelka
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#180419
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Re: CRT anode discharge
Bruce, I had a similar experience in the mid 70's as a young design engineer. I had a multi-input ADC which was implemented with a single ADC, a S/H and a couple of multiplexers. The problem I had
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Matt
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#180418
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Re: 454 fireworks
Sean: If Q1197 isn't s/c it's 99% likely the drive circuitry, which at least is accessible! John
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John Sykes
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#180417
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I built a TM500 mainframe tester, and updated the design. Someone might find this useful?
Fellow TM-500 Test Module Constructors, I've just completed assembling my TM500 test module and after plugging it into a TM501 frame for testing, found that although the 5V indicator illuminated, the
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ebrucehunter
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#180416
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Re: CRT anode discharge
Hi Bruce, During a project as a young engineer in the early 70's I was tasked with the design implementation of a unique multi channel ADC which required input sample-and-hold blocks. Initially, for
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Roger M
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#180415
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485 super weak brightness control
Hi folks, I acquired some time ago 485 and finally today I managed to spend some time with it. Cleaning of the switches and moving all the controls back and forth several times brought back most
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Ondrej Pavelka
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#180414
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Re: Broke my TDS3000B
David, Take a look at the EEVBLOG two-part video at: https://www.youtube.com/watch?v=leC-zSMbtfg Dave tries to fix a TDS3054 with a single bad channel that has problems at the same sample rate
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John Gord
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#180413
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Re: Modifying W Plugin to use 6DJ8 Tubes
Addendum. Pictures are in album "Type W Plugin 8416-to-6DJ8 Conversion".
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Dave Wise
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#180412
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Re: PS 5010 troubleshooting (no negative, erratical display)
Second update: after further RTFM it seems that blanking of the display occurs when "the supply is neither in the constant current or constant voltage mode. This happens when the output is foldback
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Martin
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#180411
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Re: PS 5010 troubleshooting (no negative, erratical display)
First update: I discoverd the switch that allows to select between front and rear panel... it has contact problems. I toggled it many times until the negative supply came up. Now it seems to work as
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Martin
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#180410
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Re: 308 Data Analyzer
Oz-in-DFW, I am interested. If you have not already sold them, contact me off-list: sonodocsch@... Thanks Steve Horii
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stevenhorii
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#180409
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PS 5010 troubleshooting (no negative, erratical display)
Hi all, I just started to troubleshoot my PS5010. Symptoms are a missing negative output and an erratic display when I switch on the outputs with the on/off key. The supply starts up fine, 5V and plus
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Martin
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#180408
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