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Re: Sony receiver STR-DE345 OVERHEATED how do i fix it...
These do run hot, they don't have a fan so they need good ventalation. If your has completely failed you may be able to resolder the voltage str and stk voltage driver Ic's or replace them.
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The manual says it thinks there is a short circuit on the amplifier output side. If it still says Protect after disconnncting all the speakers wires there is an internal problem. Take it to a hands-on tech.
If the problem disappears, you had a short. Attach speakers one at a time to isolate the cause.
There is no battery to replace to hold preset channels. The preset channels are held by a charged capacitor to maintain the nominal voltage level to the PLL (phase lock loop) tuner. The capacitor can only hold the charge for a few hours, and then it will slowly discharge - for like a short power outage.
the clicking is a power suplie overload some output amp is with problems and shutdown after overheat, when you tap is bad connection inside, normaly is related with sound off after 15min. needs to be checked by tech. to ensure perfect operation.
es posible que un canal se ha dañado por lo que primero daño el fusible con la sobrecarga y posteriormente se daño el canal. es necesario se revisen las polarizaciones de los transistores para determinar el canal dañado,es seguro que el daño se encuentra en uno de los frontales.
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