Sharp aquos lc-80le757u thermistor identify

[deltacomet]

I got a Sharp aquos lc-80le757u power board problem.

Old owner change the thermistor by another part ??? and didn't work

I repair all other problem, but I need this part for finish this board ( part ntc7001 )

Can someone have a shematic or list part of the board.
dps-299ap //RUNTKB159WJQZ

Pic in the attachment

Thanks a lot

[R_J]

Re: Sharp aquos lc-80le757u thermistor identify

It is a SCK056, If the thermistor was bad, the relay contacts are also bad.

[deltacomet]

Re: Sharp aquos lc-80le757u thermistor identify

Relay is ok. I tested outside the board.

I don't know why the old owner change the thermistor by a ceramic capacitor ???? but I changed one bad ceramic capacitor and a mosfet in the primary section and I continue to checking part...

Thanks for the help I appreciate

[budm]

Re: Sharp aquos lc-80le757u thermistor identify

May I ask how did you test the relay contacts condition?

[deltacomet]

Re: Sharp aquos lc-80le757u thermistor identify

I remove the relay from the board and with a bench power supply and multimeter I test a lot of time to know if the contact was ok and not damaged.

[R_J]

Re: Sharp aquos lc-80le757u thermistor identify

I remove the relay from the board and with a bench power supply and multimeter I test a lot of time to know if the contact was ok and not damaged.

The new thermistor will tell you after operating for a few hours if the contacts are ok or not.

[budm]

Re: Sharp aquos lc-80le757u thermistor identify

the new thermistor will tell you after operating for a few hours if the contacts are ok or not.

+1

[deltacomet]

Re: Sharp aquos lc-80le757u thermistor identify

Thanks, After few day of testing, all work fine. Right thermistor