I read the manual a little closer.  The brightness command only works on the TPS2000, not TDS2000.  I guess I am out of luck. Tom

Hi Gary, Which parts on which schematics are shown in shaded text? Dennis Tillman W7pF TekScopes Moderator

Hi Gary, I assume that you're talking about the main power supply's + and - 30 V supplies. You may not like the circuits but a few things about your unit I consider a given: - It has worked at some

This power supply does not start up correctly. The output is set at 7 Volts both plus and minus. The variable adjustment controls have no effect. The schematic shows several components in shaded

Albert, Yesterday I receive from our well known friends in Greece the HV capacitor (C1460 - 500pF 20kV) suppose to be faulty. Today I install it and my 454 in now alive after 25 years sited on a shelf

Hi, ***S/E Wisconsin Local Pickup Only*** This is a club donation, price is right - close to FREE. TEK 7704A - Nice bright trace – condition fair/rough 7A18 - Busted trigger knob – works 7A22 -

Hi Queen Nanu, You are about 40 years too late if you want to buy it from Tektronix. Is your problem with the 547 that the HV fails after being powered up for a short time, like 10 minutes? If so,

Hi Gary, "Gary Robert Bosworth" <grbosworth@...> wrote: I also have a 577 - and it has always worked flawlessly. What kind of problems are you having? Cheers, Lyle > > -- 73

Really? What’s bad about it? The power supply in my 577 seems to be powering it just fine, and has apparently been doing so since it was made.

I have a 577. I haven't had to repair that part yet. What bad about it?

Hello All, I picked up some really cheap ($3.95 at Electronics Goldmine) displays that work in the TDS2000.  The problem with it is that is looks like the backlight is too bright.  The only way

Wanted: 067-0525-00, 067-0525-01 or 067-0525-02 Hi does anyone have any spare of these BNC T cables (must be better that just BNC T and two short cables). Ideally in Europe as postage from USA has

Hi all, a quick update: I added pictures to the album with more information on this scope. As you can see in the pictures, there is a small scratch on the front where someone before me removed a

All that I know - I was hoping there might be something like a CLIP or similar floating around. D.

Hmm 555. Interesting topic. The scope that was the last gasp for tube technology. The top of the oscilloscope food chain. The end of an era for sure. I have worked on and with the 555 since 1966. As

Seeking suggestions on trouble shooting. Main Sweep (A) will not trigger. Did the procedure found in the SM, page 4-16, maintenance section Section 2 Removed Q572 and checked dc collector voltage

Does anyone have a datasheet for 7L5 U830 on Diagram 8 (PN 156-0117-00)? I have always suspected a timing race of some sort between the sequence and rate of turn-on of the 7854 power supplies and the

there is no other the type of old fashioned service manual that you are looking for, Tektronix stopped making them 25-30 years ago. you cannot find that type of service manual for any tek equipment in

I've just returned to this, I have managed to secure the front of the switch using a tiny self tapper, but this doesn't work at the back because the actuating shaft of the switch protrudes too far and

I once had a student, who said "oh look, old technology". I'd brought in a 7704A with a 7CT1N for a demonstration of transistor curves. He can't fix the new stuff. I can fix the old stuff He can't