Samsung LE-40R88BD turning off and on

[grendal10]

hi
wondered if anyone can help I have a Samsung LE-40R88BD which turns on and off, ive changed nearly all the capacitors on the power board and replaced the eeprom chip but no change, the screen doesnt fade as normal,
the image almost distorts before going black hope fully the pictures might help, ive fixed a few samsung tvs with bad capacitors which is why i was confused with the eeprom replacment not fixing the problem any ideas would be much appreciated

[Hamie]

Re: Samsung LE-40R88BD turning off and on

Jump 5vstby with PS-ON

And also jump 5vstby with BL-ON

Backlights should now come on and stay on.
Check all voltages are accurate to the main board.

[sordids999]

Re: Samsung LE-40R88BD turning off and on

You could try warming up this area with a hair dryer it may be worth a shot had the same problem with turning on and off

[grendal10]

Re: Samsung LE-40R88BD turning off and on

Thanks ill give them a try and see what happens

[grendal10]

Re: Samsung LE-40R88BD turning off and on

could anyone tell me what pin 1 power on/off is ment to be as its currently 1.9v

[vinceroger69]

Re: Samsung LE-40R88BD turning off and on

whats the power supply number?

[grendal10]

Re: Samsung LE-40R88BD turning off and on

power supply model is: ip-231135a

[tech2014]

Re: Samsung LE-40R88BD turning off and on

Could be a poor solder joint. I have fixed a couple of TV where power would come on and off by itself. I resoldered everything on the power supply heat sinks and it fixed the problem. Its worth a try.

[grendal10]

Re: Samsung LE-40R88BD turning off and on

i might have sorted it, its stayed on for the last 20mins, ive turned d-watchdog and watchdog off in the service menu. so far so good!