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Old 5th Oct 2022, 9:55 am   #29
Welsh Anorak
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Join Date: Apr 2005
Location: North Wales, UK.
Posts: 6,918
Default Re: Sony KV-A2942U very soft focus in middle of screen

I'm a bit concerned about the pinging noise in the tube neck. Hopefully it will go away.

I've never had this on a Trinitron, but the old 45AX tubes used to do this frequently. The solution (i.e. bodge) was to slightly increase the heater voltage, but that's not something I'd ever do on a Sony.

It's worth havig a look under the rubber cap. Some Sony LOPTs had the wire as a bayonet or maybe push fit, which might save you the trouble and expense of locating a new transformer. Otherwise epoxy filler is a good way to go - you've nothing to lose.
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