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Equipment Repairs => LCD TV forum => Topic started by: serg604 on January 27, 2012,22:27:48

Title: Sony KDL-52W4500 - not starting, 3.3v is ok
Post by: serg604 on January 27, 2012,22:27:48

Hello

i have Sony KDL-52W4500 and it is not starting at all, not leds, no relay clicking, at CN6150 connector only STBY3.3V (pin 3) and AC_OFF_DET (pin 2) are present (3.3v both), thats all. PS is 1-876-290-13 (G5 board), all mosfets, diodes, 000 smd seems to be ok. What voltages must present at main board, so it will give out that POWER_ON signal? because right now there is only 3.3v and nothing else, also when i press power on button at remote or tv there is still 0 at POWER_ON pin (1), and i'm not sure what can be problem, PS or main board...
Please give me some ideas if you know anything about this model (W4500), smaller ones have almost same main board, so i dont think there will be many differents. Thanks

Title: Re: Sony KDL-52W4500 - not starting, 3.3v is ok
Post by: serg604 on February 03, 2012,19:14:03

problem found - mainboard is dead, thats why tv is not starting. Anybody have one for sale? code 1-877-366-13, BGE board

Title: Re: Sony KDL-52W4500 - not starting, 3.3v is ok
Post by: netdent on February 14, 2012,12:41:42

Try bix reclemation, you get all the boards for a good price

Ronnie