Sharp aquos lc-46d85u Service manual with schematics

[drkthundr]

I have looked all over the Internet for a service manual for a Sharp aquos lc-46d85u Service manual with schematics included and I've had no luck. I have found one but it does not include schematics. Ive been trying to find the schematic to the power board and the main board. Any help would be appreciated. thanks.

[drkthundr]

Re: Sharp aquos lc-46d85u Service manual with schematics

The power board is RDENCA295WJQZ and the main board is XE716WJ

[budm]

Re: Sharp aquos lc-46d85u Service manual with schematics

What are the TV, board not doing?

[drkthundr]

Re: Sharp aquos lc-46d85u Service manual with schematics

TV will not turn on. Getting flash codes of power 2 flashes / opc 1 flashes per second. When i press the power button then it changes to power 1 flash per second. I have done the resetting and such and it does not allow the tv to turn on. Im thinking the issue is with the power board but i could be wrong. Not allot of info out the especially on this Model #.

[drkthundr]

Re: Sharp aquos lc-46d85u Service manual with schematics

I have come across at least two bad diodes on my hunt to find the problem with my power board. I've tested for power when the board is connected to the TV and I'm not getting the 13v needed on the pd1 connector. I have uploaded the images of the front and back of the board. I also included a image of the diodes that are bad. Maybe you all can help me figure out what else I need to be looking at. I'm guessing the 2 mosfits k3569 next to the diodes are probably something I need to check as well. Thank for any help given. I will be working on now and then during the weekend so don't get frustrated if I don't respond right away.

[budm]

Re: Sharp aquos lc-46d85u Service manual with schematics

'Getting flash codes of power 2 flashes / opc 1 flashes per second' Per error codes listing (from LC-46D65E/RU may use the same error code, i will find out once I get the DCV readings of the PD connector): AC_DET ERROR.

Power supply board is made by DELTA electronics: DPS-277BPA
http://www.shopjimmy.com/sharp-rdenc...upply-unit.htm

I need the DCV readings of all the conncetor PD pins (except the GND pin).

[drkthundr]

Re: Sharp aquos lc-46d85u Service manual with schematics

Here are the measurements I got. I included all connections.

[drkthundr]

Re: Sharp aquos lc-46d85u Service manual with schematics

Correction lb2 should be 0v, .1v, no wire, 0v, 27v + or -
My mistake, sorry.

[budm]

Re: Sharp aquos lc-46d85u Service manual with schematics

OK, are those readings are done with the power switched activated and the Error lights are blinking?
PD connector readings per you chart with my format:
Pin 1: 13.5V (SIGNAL) = 2v
Pin 2, 3: 13.5V (AUDIO) = 2.1V
Pin 4, 5: SGND (AUDIO) = 0V
Pin 6, 7: SGND = 0V
PIN 8: AC_DET = 2.9V
Pin 9: PS_ON = 0V
Pin 10: PNL_POW = 0V When this one is present then you will get 12V at PL connector pin 1, 2 (PNL_12V).
Pin 11: SGND = 0V
Pin 12: BU5V = 4.94V

There is no PS-ON signal to turn on the power supply.

[drkthundr]

Re: Sharp aquos lc-46d85u Service manual with schematics

it is with it on. I held down the power button for five seconds or so till it turned red then press to turn it on. The light changes to orange for a few seconds then starts flashing the code.

[budm]

Re: Sharp aquos lc-46d85u Service manual with schematics

We need to find out if that PS-ON at least goes high before the error occur then we can then try to find what the cause of the error is.
Your error code per my PDF indicate AC_DET error but it is not the case here because you do have 2.9VDC at AC_DET (0V = trouble) so the chart is not correct if that is you are seeing.

[drkthundr]

Re: Sharp aquos lc-46d85u Service manual with schematics

I do have a pin that is 2.9v so maybe i'm reading the pin description layout wrong. some of it says pd and the other says pd1 and has like 1-2,3-4. scratching my head trying to figure it out.

[budm]

Re: Sharp aquos lc-46d85u Service manual with schematics

How to read pin out of PD (US) connector:
PD (US) pin 1~5 are labled right next to the connector PD (US)
Pin 6~11 are on the chart.
They match what I put in post 9 and filled with readings you provided.

PD1 (EU) connector for European countries is not installed.

[drkthundr]

Re: Sharp aquos lc-46d85u Service manual with schematics

here are the two pins with the 2.9 and 4.94 volts readings. I use the program skitch to make the markings in the photo.

[budm]

Re: Sharp aquos lc-46d85u Service manual with schematics

You got it right, the AC_DET (AC power is OK signal to indicate that the incoming AC Voltage is not too LOW or not too high for the TV to operate).
So you have STBY 5V and AC_DET but nothing else.

[drkthundr]

Re: Sharp aquos lc-46d85u Service manual with schematics

yes i was confused. thanks for helping me figure it out. so I do have the correct 2.9 volts where it is needed.

[drkthundr]

Re: Sharp aquos lc-46d85u Service manual with schematics

yes that would be true. STBY 5V and AC_DET but nothing else - correct.

[budm]

Re: Sharp aquos lc-46d85u Service manual with schematics

You need the PS-ON signal from the main board to turn on the power supply.

[drkthundr]

Re: Sharp aquos lc-46d85u Service manual with schematics

the power 2/ opc 1 code only happens when ive held the power button to reset the tv and have powered the tv back on. if i press the power button agian i get 1 flash per second on the power light.

[drkthundr]

Re: Sharp aquos lc-46d85u Service manual with schematics

ive check the voltage over at the mainboard for the 2.9 and the 5v and they are the at the connector on that board so the wiring hardness is good not causing it not to get voltage.