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Attached operation manual , there are block diagram only , I do not have the service manual , hope it help . Rd?Tony To: [email protected] Sent: Monday, June 11, 2018 7:42 AM Subject: Re:

I have a set of Spectracom WWV receiver TM500 plugins. I have manuals for most of them but I am missing the manual for the dual wide 8212 Chart Recorder. This recorder uses two slots in a Tek TM5xx or

Can you see the CRT part number ? 從我的 iPhone 傳送

Holy Formatting Failure Batman...... :-( I uploaded the original spreadsheet here: /g/TekScopes/files/Tektronix%20575%20Parts <david.w.holland@...> wrote:

For the PTM caps, in general, I used Mallory 630V polyester film caps from from Mouser.. I restuffed the electrolytic cans. I *think* this is the parts list I used when I restored the non-Mod122... If

Hi David, What type of capacitors do you suggest replacing the 575 paper caps with, and where do you buy them? Thank you to all that have contributed to this 575 topic! tom jobe...

I got to thinking today, how a 7603, 7A18, 7B53A etc looks as modern and 'cool' as it did the day it came on the marked. Same will all of 7K -pete Proud of having been there for a few of my years

There are a number of paper capacitors in the HV section. (Amongst other locations). I'm sure folks will disagree, but I'd recommend preemptively replacing them. (Any capacitor described as PTM in the

Im happy to help.? Posting it caused me to verify several points in my list.? Let me know if you find more.? The most glaring problem I found was substituting some Nichicon for Panasonic and not

Thanks for the advice guys: I do normally run stuff up on a variac, and I will check those fuses are in place. Fortunately I have a supply of many of the valves used (and a valve-tester): fingers

Replacing the fuse with an ammeter I read 120mA.

Hi John: Before you fire your 575 up check that there are fuses in series with pins 14 and 16 (two fuses). I had a short in C244 which did not draw enough current to pop F601. The short overheated

Thank you, You deserve a medal!

I am sorry, I was not aware that editing a message caused this. I will refrain from doing so in the future.

Perfect Keith. This clearly shows that Q1416 is always in saturation and that CR1416 never conducts (is even reverse biased). Hence I think the fault is not in the regulator circuits. You might

Even with as out of spec as the PSU is I have been getting intermittent traces on the screen and one of the two traces was pretty clean. The last time I turned it on I heard a pop and shut it off

I have parts for extender kits on hand (for TM500 / TM5000). I have been emailing people that are on my wait list, but if you haven't heard from me and would like a kit please contact me off list.

Thank you Albert. I put the scope in dc coupling and centered it. Needed to adjust the scope to .5V/div in order to keep the same gain for comparison. Here are the waveforms:

Hi Keith, A waveform is not complete without an indication of DC levels. When Q1416 is all the time in saturation, then the 3 waveforms will look identical, but the base waveform will be at about

Ho John, Congratulations on getting the 575 400V version (575 Mod 122C). You should search through the archives for advice on bringing up older vacuum tube instruments carefully to allow the