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

Before replacing the switching output IC STR, you have to check all its associated components on board, especially low value resistors, and zener diodes. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts.
http://electronicshelponline.blogspot.com/
repair procedure of STR based power supplies, and circuit diagrams are given. Just type in the STR number in the search box at the right side to get gathered related posts.

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Hello, i have a sony FD Trinitron WEGA #KV-36FV310 ... Need to know whichoptocoupler ic is used in str 6267 based power supply in sony trintron crt tv.

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Need to know which optocoupler ic is used in str 6267 based power supply in ... My sony crt Tv totally dead when touch any components and the IC strs6307 ...

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

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

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)

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

IC part number A6252
http://www.bluestar-online.com/ProductDetails.asp?ProductCode=STR%2DA6252&CartID=1

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.

hi i have a protect error problem and the power is only pluged in

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