Page 5-7 of tek_made_sm.pdf, Tekwiki. Albert

Good. You mentioned having a manual. Next check the 150 volt and less levels of the power supply with a DVM against volts in the manual. Keep clear of the high voltage.

Well it sounds like the ROM is definitely shot, that can be replaced, but that's only the first step. Spiking the +5 to something higher can take out dozens of chips all over the scope (including

The 155-0022-00 was used in almost every 7000 series mainframe as the horizontal channel switch or amplifier and as the vertical and trigger channel switch up to 200 MHz. It was also used in the 2230

Maybe other members here will know whether these 2467B ROMs <http://www.ko4bb.com/manuals/index.php?dir=04_ROM_Images_and_Drivers/Tek_2467B> are identical to the 2465B's. I think the 2445 and 2465

Oh my. If you rely on a clean sine then you will be very disappointed in many areas. Peter

Thanks, that's heartening - after I messed with the grid potential and the autofocus gain, that's about where I start losing focus now. Hmmm, blinding is not how I'd describe mine - but then I

Hey Ciro, I'm sorry to hear about your 2465BCT. Do you have any memory of where on the board you shorted the 5VD? I'm guessing knowing where it got shunted to will help assessing the likelyhood of

Hello Peter, ANY distortion similar to this will show effects like the seen ones. As the falling part of that spike ( in the leading edge ) runs very fast ( high dU / dt ) the brightness is

A voltmeter set to read AC volts works acceptably for measuring ripple. For replacement capacitors, I usually select one based on diameter first if a clamp is used to hold it into place.

Another item learned here. Some of the 7603 power supply electrolytic cap leads are also part of the PCB circuit. With a two lead modern cap be sure and add jumpers where necessary. Some members have

Hi Barry. I see that, with the exception of the angle, the distorting effect is as I expected ! About mains... if you have, in north america, 120AC, then this means you have 120 VAC RMS. The sine

Hello Siggi, I find that there is very seldom an opportunity to jack u� the intensity on a 485, except for looking at low-rep-rate signals with rathervfast time-base settings, and yes, I would

This may heve been discussed sometime before, but I don't recall ever seeing detailed info on the commonly used Tek 155-0022 channel selecting switch. These normally are used to select one of two

That noise spike isn't terribly bad; I've seen much worse where equipment ran just fine. Remember that anything synchronous with the line frequwncy may be causing your problem. As for the amplitude,

Hey Jochen, sorry to hijack your thread, but I just got myself a nice/crusty old 485 for Christmas, and I'm trying to figure out whether the CRT is possibly failing. It seems to me the CRT isn't as

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I just recapped my second 7603 frame. Neither were blowing fuses but there was ripple of varying degrees on some of the power rails and one of them had a blown rectifier package. Nice to be able to

I don't have any thoughts regarding the balance warm-up drift, or the phosphor type, but regarding the B&K signal generator: A common design for a low distortion sine wave audio oscillator is a "wien

still doing clean up at sphere, and trying to make space, and I found a mint looking C-59A camera (fits 7K frames, and has to top viewfinder and polaroid film pack) and (god save me) TWO of those