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Old 10-28-2012, 05:44 PM
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timmy timmy is offline
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well i really think im just going to leave this set alone because im making myself crazy and others. everything i looked at did not seem all bad and the crt thankfully is ok unless there could be gas in it and not show with a glow of any kind. its amazing it has a great picture my only problem with it is that a white pic is not so white, white scenes has kind of a reddish tint to it and at the same time the white shows the hv drops. so if this is all that bothers me then maybe ill live with it. small white scenes are fine just the ones that take almost the whole screen has the reddish tint and no matter what i adjust it is what it will be because the hv cant keep up or there just is not enough for whatever reason. i tried again today 24kv at crt 6bk4 cap off then with cap off i pulled the crt plug off and i get what looks to me is 32kv. why the crt plug in it wont go over 24kv this is the question. i did change c3 and im sure if it were backwards it would have vented or other things may be worse off then they are. again if the crt bias is raised even alittle bit then the screen should not bloom the way it does. so this to me is a weird mystery that maybe ill solve one day.
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Old 10-28-2012, 06:10 PM
ctc17 ctc17 is offline
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Look at where that cap is in the circuit, it goes from the contrast wiper to ground. If it was shorted it would cause biasing issues with the video out.

Yea take a break, you can come back to it later and will be freshend up. If I spend too much time on one tv my eyes start to blur out then I know its time for a few days off.
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Old 10-28-2012, 06:23 PM
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timmy timmy is offline
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Quote:
Originally Posted by ctc17 View Post
Look at where that cap is in the circuit, it goes from the contrast wiper to ground. If it was shorted it would cause biasing issues with the video out.

Yea take a break, you can come back to it later and will be freshend up. If I spend too much time on one tv my eyes start to blur out then I know its time for a few days off.
well if that cap were shorted then the contrast control would not work or work well? because it works very good.
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Old 10-28-2012, 07:14 PM
ctc17 ctc17 is offline
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Quote:
Originally Posted by timmy View Post
well if that cap were shorted then the contrast control would not work or work well? because it works very good.
If it was shorted it would work very well but it would shift the dc bias on the tube. Why not just check it?
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