Re: Sharp LC-52D65U won't power on

freakaftr8 - No pink bars visible.

budwich - I found a copy of the service manual online. I've sent an email to Delta customer service to see if they will provide a schematic.

Re: Sharp LC-52D65U won't power on

OK I must be going crazy. I just checked Pin 1 again and it is not shorted now. I checked several times the last time. Schematic would still be very helpful.

Re: Sharp LC-52D65U won't power on

Found LB1 and LB2 (US) Pin1 short to ground even with all connectors unplugged.

Does anyone have a schematic for RDENCA295WJQZ DPS-277BPA? This is the power board on my set.

Re: Sharp LC-52D65U won't power on

Thank you for quick responses budm, RJARRRPCGP and budwich!

budm - Please see voltages with unit plugged in and power light flashing (after screen goes dark)

LB1(US)
Pin 1: INV1 = 0V
Pin 2: INV2 = 0V
Pin 3: INV3 = 0V
Pin 4: INV4 = 0V
Pin 5: INV5 = 0V

PD(US)
Pin 1: 13.5V (SIGNAL) = 0V
Pin 2, 3: 13.5V (AUDIO) = 0V
Pin 4, 5: SGND (AUDIO) = 0V
Pin 6, 7: SGND = 0V
PIN 8: AC_DET = 3V
Pin 9: PS_ON = 0V
Pin 10: PNL_POW = 0V ...

Hello All,

Thank you for your help in advance.

I have a Sharp LC-52D65U that will not turn on. If power button is pressed, the TV will not turn on.

I will try to outline steps taken so far to troubleshoot and resulting conditions.

Initial mains power applied (plug TV power cord into wall socket) = Power LED blinks green at ~1 Hz rate constantly. No other front panel indications.

Try Sharp reset procedure (Volume down + Input buttons pressed at same time while mains power applied) = Set will turn on and show a possible...

Re: New Members - please post your introductions here

Hello Members. Great forum. I've lurked for a few weeks and finally made the leap by signing up.

Thanks to all for your advice!