Re: Sharp LC-46DH77S Communication error? Bad main board?

Hello.

I forgot this thread but got an email now when it got answered

I bought a used duntke685 mainboard with all the same numbers.
it seems like they use the same board for many screens but ut has to be the same number, the one that isnt duntke685.

But anyway, got the card, changed the card, started screen. worked directly and still works.


payed about 600SEK or $100

so if you have the same problem, the main board is my...

Re: Sharp LC-46DH77S Communication error? Bad main board?

Very strange.

Today I work from my home and every time the power-led started to flash I pressed the stb-botton on the remote.

Then it started as nothing ever happend, after at couple of tries then. . .

When I mesure on the STB to the inverter board there is about 3,28v DC. Everyting is ok.

Must be that the main board dont send the correct voltage to the inverter board.

Order one today, wait a couple of days then we will se.

Even the fact that...

Re: Sharp LC-46DH77S Communication error? Bad main board?

Yesterday night I was looking at this again.
Were looking more for de low DC-voltages.

BU5V 4,9v
12V and 60V to the inverterboard ok.
pnl_pow 3,1v
ps:on 3,1v

The thing I didnt get understanding on was the "VON" to the invertercard.
It looks like there is about 2,1v but when I plug it in it dissapears. The only 2,1 on the connector to the inverterboard that keeps being there is REg2(or something like that).

Could it be the inverterboard? All...

Re: Sharp LC-46DH77S Communication error? Bad main board?

Quick mesure and the only abnormal thing I found (I think) is that the BU5V(in the PD1(EU) connector) between the main board and the PSU only is 3,1v DC... Called P9601 on the main board.

There are one LED on the main bord blinking near IC2003 called D2002 (hard to see there are soldering point in the way)

One time when I got the TV started the two other Leds D9101 and D9102 were flashing also.

Found a main board in the UK. REady to order but I'm not sure...

Hello.

I'm new here and read a couple of treads for tips but I cant find anyone who have my problem.
I'm from Sweden so English isn't my first langue...

I got the tv yesterday from a working colleage and it has been at a servicefirm but they couldn't fix it. They said that it was wrong on the main board, I'm not sure thats the case and was wondering if anyone here would like to help me find the broken part.

At startup the power-LED is onGreen), after about 2-3minutes it starts to blink. When pressing "menu" on the remote the OPC-LED...

Re: Hp/sharp 32,37" lcd and most sharp lcd blinking green light problem

I have tried to find someone else that have the same trouble as med.
I have a fault code that shows like the power och OPC blinks simultaniously, both just once.
At first the power only blinks but when pressing "menu" on the controller OPC also starts to flash.

The servicemenual says thats its a communication error. I dont know what kind of error...

I'm thinking of one thing, the only colour i've seen on the power-led is green and orange(when updating...

Re: New Members - please post your introductions here

Hello. I work woth heatpumps and sometimes helps freinds with tvs.
From Sweden.