sony model kp-57ws500

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ctmklm
sony model kp-57ws500

can anyone help. convergance ic were bad stk392-560.replaced both ics same pic when turned back on. went to g board (power supply) -22  volt pico fuse blown and 1000 uf. cap bulging. replaced both and turned on set now  power supply tuns off by itself. if you try to turn it back on turns off. could conv. ics have been dameged with out -22 volts when i first turned it on.

Larry Dillon
He means the connections on

He means the connections on the convergence IC's. Each pin connection needs to be by itself. No solder connections between pins.

ctmklm
yes i checked the solder on

yes i checked the solder on the ics . this is somthing i always check before powering up.the set didnt go out until i replaced the -22 volt pico fuse on g bd. as well as 1000uf cap was bulging from the top so i replaced it to.when i repowered up set goes in to shut down with six blinks.

Larry Dillon
Double check the capacitor.

Double check the capacitor. Did you replace both IC's?

ctmklm
i re-replaced the cap and i

i re-replaced the cap and i re-replaced the stk 392 560 both of them twice. all set does now is blink six times.im going to replace the g bd. maybe smothing shorted when i took out the pico fuse and cap.the six volt line comes up before the set shuts down.so i dont know why the processor is turning the set off.any other thoughts.i did not go neer the a and b bds.just the d and g bds.

Larry Dillon
Perhaps you pulled on a plug

Perhaps you pulled on a plug and it is not sitting all the way down into the connector? I have seen this a dozen times if not more.

ctmklm
well i found the problem. the

well i found the problem. the g-board went bad. i dont know why but i replaced it and set works great. thanks for the advice.

alex05
My Sony MODEL#KP-57WM500

My Sony MODEL#KP-57WM500 powers up & the screen turns red, but then shuts down. Any idea what may be causing this particular issue?

 

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