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Does changing the brightness also change the focus of the picture? If so the CRT may be conducting too much due to improper bias of the control and screen grids. Vertical fold-over can also be an

Dave, It is a B36A24Z. Thanks, rich!

Model number?

Hello all, I am having a problem with my Zenith 36" CRT TV. It goes into shutdown mode. When it is cold I have to start it up over and over before it will stay on. Also as the brightness of the screen

Thanks for the encouragement - I agree generally, it is just that my primary focus is to use test equipment in service/design,rather than to spend inordinate time repairing it. Having said that I know

Ronan: There is a great amount of satisfaction in successfully repairing high-tech instrumentation. Some of my old equipment out-performs the latest offerings. Often it is worth the trouble to do the

Hello! I've troubleshot my beloved 485, to the point I have to just let go -- I must send it to my scrap heap (spare parts shed) -- with the help of the service manual, I traced the problem to the

My first guess is that the full wave bridge for the -8 volt supply is dying. Replace it with the highest spec bridge that can be made to fit. The lead wire size of the full wave bridge is the

Hank: It is a slow pulsation as if it is a sinusoidal tied to the line frequency. It does not flash bright and dull. The trace never completely disappears. Someday I may find the time to go in with a

Gary, What kind of pulsating display does your 7904 have ?Is it worse at slower sweep speeds ?If so, the readout may be in "Gated" mode. ?HankC, Boston WA1HOS

Bert: I am sure you have heard of the 2 most common means of "smoking out" the cause. The first is to apply elevated heat levels to force the problem to surface long enough to trace it down. The

My very high mileage 465B seems to have lost it's legendary braggability. It looks like something is pulling the -8 line positive to the point where the safety diode CR4515 turns on. The strange thing

I forgive you. Ben Sent: Monday, December 01, 2014 9:04 PM To: TekScopes@... Subject: Re: [TekScopes] 3S3 Connectors Oh no, no I have been sleeping: one (P6032) is male, the other (Kurt's

Oh no, no I have been sleeping: one (P6032) is male, the other (Kurt's picture) is female! Albert

Ben, I failed to notice the writing on the inner cylinder. When I'm home, I'll take another look. I have just that one P6038. -Kurt [TekScopes] <TekScopes@...> wrote:

Hi Kurt, watch out here: www.wellenkino.de/forum the topic is at Oszilloskope and named “3S3 & 3T2 Sampling System for my 564B” regards Ben Sent: Monday, December 01, 2014 8:12 PM To:

Unfortunatly, it seems, that it isn’t the right one. Is the P6032 usable with the 3S3? Can you compare it to the picture on w140.com? regards Ben Sent: Monday, December 01, 2014 7:54 PM To:

Ben, I'm interested in your project. Will it be the same design as the P6038? -Kurt [TekScopes] <TekScopes@...> wrote: [Non-text portions of this message have been removed]

Thank you very much Albert! regards Ben Sent: Monday, December 01, 2014 5:27 PM To: TekScopes@... Subject: Re: [TekScopes] 3S3 Connectors Difficult to see but the G actually is a C. So

David: Thanx for the info. I have many Tektronix oscilloscopes, but I never checked on the power supply filter caps. My 7854 has a pulsating trace intensity which is very annoying. All of my other