Thread: Advice Admiral 12X12 20Z1 low contrast w/ lines
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Old 01-22-2021, 10:15 AM
Kevin Kuehn's Avatar
Kevin Kuehn Kevin Kuehn is offline
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Quote:
Originally Posted by compucat View Post
Definitely looks like a heater to cathode short in the CRT. Such a short causes retrace lines and renders the brightness control ineffective. It happened once on my Motorola 9VT1 on the 8BP4 CRT and I blasted the short with my CRT tester and it was fine afterward.
That very well could be the case. But a heater to cathode short should show up on the tester, provided the OP checked for shorts.
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