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Old 02-12-2019, 11:21 AM
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Jon F Jon F is offline
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Location: Morgan Hill, CA
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Quote:
Originally Posted by old_tv_nut View Post
Are you sure the chroma bandpass amp plate is the same voltage as the screen grid (148 v)? That's not right, for starters.
I copy-pasted the 148V from pin 3, pin 6 should have read 268V. I updated the image below.

Quote:
Originally Posted by oldtvman View Post
At some point an oscilloscope is the best and easiest way to pin down problems like this.
I have a scope, but do not use it much so my skills in diagnosing a TV with it are limited. Any tips on waveforms I should check?
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File Type: jpg Screen Shot 2019-02-12 at 9.18.25 AM.jpg (97.7 KB, 25 views)

Last edited by Jon F; 02-12-2019 at 11:30 AM.
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