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Old 11-22-2019, 09:24 AM
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Electronic M Electronic M is offline
M is for Memory
 
Join Date: Jan 2011
Location: Pewaukee/Delafield Wi
Posts: 15,445
CRT probably woke up from sleeping sickness.

Those thermistors were designed to get hot and often would unsolder at the point the leads joined the resistive puck... Sometimes the pucks would crack too. These were high failure parts in color TVs (which was the main application for them).

Check the brightness pot and if it is good change any caps in it's circuit that might be leaky and dragging it's output.
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