Re: Sharp aquos lc-40le820e power on problem
So , update. I check the mainboard today ,and i found that. These three capacitors are shorted to ground when the are on circuit. I desolder them ,and they are ok. The short-circuit is coming fro this ic3604. This is the M2303ADN. Maybe a suggestion of equivalent ic;...
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Re: Sharp aquos lc-40le820e power on problem
These diode's are shorted when in circuit.(d7717,d7703) Out of circuit is ok. So ,what component should i check; The strange thing,is that. If i power on the tv today ,after a few days off,is working perfectly for a minute. After that lights on-off....
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Re: Sharp aquos lc-40le820e power on problem
this morning update.After many hours with power cord disconnected ,i plugged this morning and everything works fine for 1 minute.All voltages present.13.3v,5.0v,high voltage capacitors 308volts on stand by and 400+when on.But after one minute ,disaster again.Now high voltage capacitors is 316 volts on stand by ,5,0v present and 13v only for 3 seconds when i press the on button on the remote control.And only 2 quick flashes on central pyramid and 1 longer period led off
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Re: Sharp aquos lc-40le820e power on problem
Pin 9 1,20v at the beginning and 3,0v after 2 seconds .pin10 3,05v ,pin12 0,12v. Board is dps-126cp-1 a
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Sharp aquos lc-40le820e power on problem
Good afternoon to all of you. First of all sorrybfor my bad English. I have a sharp aquos tv ,and i m dealing this problem. If i leave the power cord disconnected,then it starts normally for one minute approximately. After that the tv restarts and only the touch panel lights working for about 10 seconds and only 1-2 seconds lights up the led panel. After that loop again. No signal lights in center. I think probably is a power supply problem . I can see 5 v ,13.3v in 4 pins . I m a mobile technician and i can follow your instructions if you yave some suggestions. Thank you in advance.
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