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74[L]S387 did ring an ancient bell. I could find a reference here on page 5-13: http://www.s100computers.com/Hardware%20Manuals/Processor%20Technology/Processor%20Tech%2048K%20RAM.pdf "U65 will

Used MC10102Ps are available from utsource.?? I have no connection to this supplier, but have purchased parts from them previously without any problems. Regards Kerry From: <[email protected]> on

Are you certain about the 74LS387 part number? I can't even find a data sheet for that. the MC10231 and MC10102 are both ECL parts and seem to be available (-ish) on the auction site. I can easily

I am looking for 74ls387n, mc10231a, and MC10102P chips does anyone have source? I have done a lot of searching

Firstly, I appreciate the comments immensely. I had been using the rear BNC A-Gate signal as sync for my bench rig while observing other waveforms earlier in the repair so I am familiar with those.

According to the Common Design Parts Catalog Tek part# 151-0830-00 is an MPS918 — Jeff Dutky

Finished log overlay for 5000 series (5L4N) scopes. See photo album /g/TekScopes/album?id=273149 Dave

I need help finding 2 NPN Transistors PART # 151-0830-00 for Tektronix 2246 Oscilloscope. Both Q305 and Q306 are shorted and I do not understand why both should be shorted E to B. I can understand one

Thank you all for the replies. The value read was 1.14M Ohm. Please forgive my typo. Regards, Roger

As I recall, "T0" is +/- either 50 or 100 ppm/C. These "T" numbers have been standardized for a long time. You can search around for the terms and find tables that lists them. I think T16 is the

David, from the service manual, the manufacturer part number is 5053RD1M430F which suggests 1.43 MegOhm. If it were 1.43 milliOhm then it would have drifted an awful lot to read as 1.43 Ohms now, and

R569 MegOhm or milli-Ohm? TC=T0, just means zero temp coefficient or close to. D.

Really? 43,000,000 Ohms specified vs 1.14 Ohms measured? If so then WOW!

If those parts are removed then there's NO TELLING what other parts are missing or bad. Parts for these are generally only available used and on FleaBay and the asking prices are usually insane.

Matt If there is no shaft coming out of the hole this could be a small missing part or a very LARGE missing part. This is a 2 layer shaft that is coupled directly to the isolated collector supply. So

Hi, I’m considering a 576 curve tracer that has a missing max peak volts knob and no shaft coming out of the hole. So presumably there are also some missing parts inside. How feasible is this to

Albert, I think I fixed the x1 and x10 horizontal issue. I can now quite dial them in. The problem was that the contacts of the x2, x5, and x10 wafer-switch were very dirty. Even at zero, the trace

I see Stephen. It's good to set R544 and R566 first and do steps 24 and 44 after that. Steps 24 and 44 have no effect on sweep speed, only on sweep length. Albert

Dear All, I am trying to fix a Tek 577 for some time. After a LOT of work I think I have been able to fix all major problems of the unit and go through the calibration procedure. One minor issue I

I remember when I was in that situation, Facebook Marketplace cured that symptom. Anyways, amazingly there are many that might be in your local area that don't advertise the best that might even have