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Ic str A6252 - Sony MHC-GX555 Mini Hi-Fi System Shelf System

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Dec 21, 2015 | Sony Televison & Video

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Hi! i have sanyo televesion, model ts21sf1k. the problem is no power. i replace the power ic regulator STR w6753. but still no power. no voltage out in power supply.


SMPS circuit is not functioning. Check and replace all the associated component to STR. If you wish to get some details; visit the site linked here. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/

Jun 24, 2015 | Sanyo Televison & Video

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Dry electrolitic condensator on main power unit or short circuit on speaker cables

Nov 27, 2013 | Sony MHC-GX555 Mini Hi-Fi System Shelf...

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VOLTAGE DROP AFTER STR.MAIN FILTER NOT DISCHARGE AND FUSE GONE EVERY TIME. I CHANGE STR & SUPPLY IC.


connect a series lamp for sefty to the monitor. start to disconnect the component from fuse ,line filter, bridge rectifier, filter capacitor, check the voltage at ic 12v also check pulse at str if not then check ic resistors capacitors,and replace if found faulty

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Hi, I have a sony STR-DE675.; the audio cuts out between stereo and mono, as if something inside is heating up.I have cleaned all connections and carefully vacumed out any dust from inside the unit.The...


STR is a very sensitive ic module of the audio system and it always has a tendancy to heat up quickly and has some basic precautions to be maintained for operating this. correct speakers should have been connected so on..



if you are technically very confident open up your system try to locate the str ic unit check whether the contacts of the heat sync (aluminium metal chunk screwed with the ic to absorb the heat) has been correctly fixed. (pls note- manufacturers will always have appropriately heat synced it try to use it in a cooler place)

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Replace the IC 1101 with Part No. 6-806-144-01. This Ic will have updated software on board to fix the problem.

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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.

Jul 16, 2009 | Sony STR-DE345 Receiver

1 Answer

Sony str-DE435 Flash Protector


this is not a reset problem, you have a defective audio output, is either the outputs transistors or the drivers IC's ( integrated circuit) and sometimes if you are lucky is just loose connections on the drivers IC;s.
good luck

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