Einleitung
The set top box circuit seemed to be suffering from unstable power. All easily testable components (capacitors diodes) seemed OK. The only chip, a seven pin TNY275PN off-line switcher chip, seemed a likely candidate for replacement. As they cost about £1each from ebay it seemed worth a try. And it worked.
Werkzeuge
Ersatzteile
Abschluss
Soldering in a new cheap (£1) 7-pin chip onto the circuit board got the set top box working again
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