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If I had a 2245 with your problem I'd be looking for... Hmm. Your parts are running naked, right - no heat sink? That's maybe 1W. An eBay seller has TO-92 VP0116 $15 for 10, glue on a copper fin.

[email protected]> wrote: Yeah, you may well be right. Aside from the power supplies and U800, I can't think of much that's common to the OSD and traces in the horizontal. Personally I like to look

> 'm no expert on U800 failures, but the two videos I found show different symptoms > I was triggered by the frequent symptom of the complete screen info pulling to one side - and beyond. I hope

I was given a 2245 recently which of course doesn't work too well. Investigation reveals that Q805 and Q806, in the horizontal right plate output stage, are cold to the touch. The service manual,

Intensity is way too high IMHO, which is why you get that problem. If OTOH you don't want your SC504s and are in the UK ... D.

How do you know which manual is appropriate to the SN? Am I missing the obvious? I have manuals with the PN of 070-6863-00 and 070-6863-01

SN is B058926. it powers up normally and passes all self tests. It will complete (assumedly from the light sequences) the boot sequence and power on tests even when the display is wonky. It seems

Greetings, I have 2 SC504 scopes. I have done a lot of restoration work on both these units. They are both working now, but I am not satisfied with the trace having ghost. Please take a look at the

Hey Harold, I'm no expert on U800 failures, but the two videos I found show different symptoms: https://www.youtube.com/watch?v=WtacH4FGmR0. While the trace is affected, the on-screen-display is not

What SN? A5 SMD or TH ? Beware as hrs can be changes at CAL. Have full serv man for the serial range? Usual drill: 0/ IF A5 is SMD check for corroded SMD cap damages 1/ Check all PSU V/ripple

That was the kind of thing that I was worried about. I do have a parts unit so maybe that could be used if needed. I'm not sure when I will get the chance to dig into it but I very much appreciate

My thoughts are not so much about a HV problem as the infamous U800 horizontal driving chip. Raymond

Harold, It is likely that resistors on the high voltage board are bad. I did post the R numbers and other information for someone recently having focus problems. Mark

I have a nice 2465B that I bought as being fully restored and recapped (I’ve not opened it up yet but have no reason to doubt) that only has about 460 hours on it. I bought it back at the end of

I've temporarily owned such a system a few years ago. The pictures on Tekwiki show that system. But it's not that easy. On top you'll need a terminal and a compatible signature analyzer. And some

The SG505 was designed by the founder of Audio Precision, Bruce Hofer. It is a marvelous signal generator for audio with a THD% level approaching the level of the SYS2722. For those interested there

Sorry, nothing here like that

I looked for one of these a decade or so ago and didn't find anything. DaveD KC0WJN [email protected]> wrote:

Did I put a silly request? Nobody knows what I’m looking for or it’s nowadays so rare that only museums and some collectors keep that equipment closed inside a display case? Thank you for you

Hi Tom, Don't really remember how I did ut. I followed a YouTube video where somebody demonstrated how to make round banners in Word, and took it from there. Sorry, Leo