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7/24/2025, 11:56:48 PM
>>2933892
I don't own a scope but I'll take pics. Often those are DC-DC up converters for VFD displays running 19v (maybe more?). But they have additional wiring pins so theirs likely some coordination and communication going on, not just dc-dc boosting.
https://filebin.net/rw0y21atw76w3gaq
Sony definitely made a service manual for this unit, but its rare to find them for units that werent sold outside Japan. Somewhere there exists a PDF with really good wiring diagrams and pinouts and probably diagnostic procedures as well. Maybe try searching on yahoo auctions japan and mercari.
I don't own a scope but I'll take pics. Often those are DC-DC up converters for VFD displays running 19v (maybe more?). But they have additional wiring pins so theirs likely some coordination and communication going on, not just dc-dc boosting.
https://filebin.net/rw0y21atw76w3gaq
Sony definitely made a service manual for this unit, but its rare to find them for units that werent sold outside Japan. Somewhere there exists a PDF with really good wiring diagrams and pinouts and probably diagnostic procedures as well. Maybe try searching on yahoo auctions japan and mercari.
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