Question about Sony LBT-XG500 Shelf System
MHC-DP900D HAD SAME PROBLEM- PROTECT, PUSH POWER. TRACED CAUSE TO AMP. DC PROTECTION CIRCUIT ON AMPLIFIER BOARD. ACTUAL FAULT WAS A SHORT CIRCUIT OF THE AMP. IC LEFT CHANNEL OUPUTS (STK412-030 PINS 10 & 11)
EXCESSIVE SOLDER APPLIED DURING MANUFACTURE HAD PROBABLY BEEN HEATED UP ENOUGH DURING USAGE TO BRIDGE THE PINS. CURRENTLY USING THE UNIT WITH RIGHT CHANNEL ONLY UNTIL I PURCHASE A NEW IC. BYPASSED DC PROTECTION FOR LEFT CHANNEL BY ISOLATING INPUT TO DC DETECT TRANSISTOR.
This is what I could find, it looks like it will need serviceing unless you can do it yourself, it can be deadly if you don't know exactly what you are doing.
Thanks for the fixya rating, hope this helps
Posted on May 12, 2009
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Posted on Jan 02, 2017
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