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Old 02-21-2012, 07:40 AM
Bill Cahill's Avatar
Bill Cahill Bill Cahill is offline
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Join Date: Mar 2005
Location: St. Petersburg, Fl.
Posts: 1,298
Unhappy Help needed on Admiral 21D1 chassis tv

Hi. I've got the main thread at ARF, but, I hope someone here can help me.....
I re capped, and, installed all new electrolytics in this 16" deluxe Admiral tv. I checked all resistors, and, replaced open audio output transformer.
Here are the particulars after cleanning up a couple of minor bugs.....

I have 12KV of high voltage.
I have intermittent audio.
Screen barely lights. Very dim. I adjusted the living crud out of ion trap, and, focus coil.
Definately has video problems.

At first, sync, horizontal oscilator, and, vert. were completely stable.
I had great contrast, but, very low brightness.

Now, it has worsenned...
Sound cuts in, and, out on its' own.
On most channels I now have what appears to be a negative picture.
Sync is mostly unstable, now.
Where do I start on this?
Any ideas why my video is so dark?
Picture tube checks good on my BK 465.
Is there a voltage that could be missing, or, a part of the tube that has gone bad, and, still check good?
Brightness control works.
So does contrast control.
How well I don't know, as the picture is so dim....
Power supply voltage is mostly stable.
Slight variations, but, not alot.
At 125 volts I'm getting the proper power supply voltages.
Please help, guys.
Bill Cahill
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