Quote:
Originally Posted by zeno
133 volts may be OK but you need to see if it changes. Use a variac
or go from zero brightness to full brite. It must stay the same.
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Well I did some testing tonight and found the +B voltage floating around. It was up to 125v with a dark picture but lowers to 120v when bright. +B control resistor DOESN'T work sometimes. Sometimes it goes back to 130v and that's when the H osc. disable circuit gets triggered. I think the low voltage regulator is crapping out!
https://youtu.be/OqzFIbvbYJQ
The lack of color & white horizontal dots seriously concern me. Honestly, I'm almost at my wits end with all these failures!
Considering just sending this set off to Multi Media Medic in Maryland.