sharp LC-32SH130K / Vestel 17PW82-2 v.1 090511

[vinceroger69]

Re: sharp LC-32SH130K / Vestel 17PW82-2 v.1 090511

Whats the mainboard part number used in this set

[dooosuk]

Re: sharp LC-32SH130K / Vestel 17PW82-2 v.1 090511

When you say main board, do you mean the one which has all the connection points e.g. SCART on it?

I'm pretty sure it's a Samsung board but I failed to take a picture of it. I guess I'll be popping back around for that info.

[vinceroger69]

Re: sharp LC-32SH130K / Vestel 17PW82-2 v.1 090511

yes sorry the one with the scart/hdmi etc on it if you can get a good picture of it and also the part number.

[vinceroger69]

Re: sharp LC-32SH130K / Vestel 17PW82-2 v.1 090511

also check reece video check the diodes like he says just incase any are giving bad readings for didode test you Dont need the set plugged in)
https://www.youtube.com/watch?v=N6Eo0BwRRJk&app=desktop

[dooosuk]

Re: sharp LC-32SH130K / Vestel 17PW82-2 v.1 090511

Thanks Vince. Symptoms seem very similar to Reece's video so will check the diodes.

[vinceroger69]

Re: sharp LC-32SH130K / Vestel 17PW82-2 v.1 090511

Maybe reece will advise us on those diodes (the top edge ones) and what voltages they provide as in your chart you have posted most are ok.

[budm]

Re: sharp LC-32SH130K / Vestel 17PW82-2 v.1 090511

You do not have BL-ON command signal from main board to turn on backlights circuit. Is it always at 0 VDC when TV is on or off?

[dooosuk]

Re: sharp LC-32SH130K / Vestel 17PW82-2 v.1 090511

You do not have BL-ON command signal from main board to turn on backlights circuit. Is it always at 0 VDC when TV is on or off?

Not quite sure what you're asking here and which BL_ON you're referring to as there seems to be a pin labelled BL_ON on both connectors.

I only tested with the mains power on. I can't switch standby on/off.

[vinceroger69]

Re: sharp LC-32SH130K / Vestel 17PW82-2 v.1 090511

Maybe reece will advise us on those diodes (the top edge ones) and what voltages they provide as in your chart you have posted most are ok.

this was my thought too regarding the bl-on voltage hence i wondered what main board this set used plus what the diodes do on the psu that go faulty maybe one of those feeds that circuit?

[budm]

Re: sharp LC-32SH130K / Vestel 17PW82-2 v.1 090511

You have main board problem.
The 18VDc is also missing so the diodes for the 18V_24VA are OK?

[dooosuk]

Re: sharp LC-32SH130K / Vestel 17PW82-2 v.1 090511

You have main board problem.
The 18VDc is also missing so the diodes for the 18V_24VA are OK?

Is that the 18v I should be seeing at pin 13 and the 18v-24v at pin 26?

Not sure whether what you wrote was a question or a statement about the diodes?

[vinceroger69]

Re: sharp LC-32SH130K / Vestel 17PW82-2 v.1 090511

i think budm means test the diodes as per the video reece linked if any of the diodes are bad that may cause the missing voltages

[ReeceyBurger123]

Re: sharp LC-32SH130K / Vestel 17PW82-2 v.1 090511

Keep the mainboard unplugged, test the main connector for the Mb for the following voltages:

12v
5v
3.3v

Then test the connector going to the inverter for:

24v

If these are present with the Mb disconnected your Psu is ok if not Psu is failed.

[vinceroger69]

Re: sharp LC-32SH130K / Vestel 17PW82-2 v.1 090511

he has posted the results reece in post 20 looks like he has bl-on missing and a 18v? the other voltages are there so probs a mainboard issue as budm advises

[ReeceyBurger123]

Re: sharp LC-32SH130K / Vestel 17PW82-2 v.1 090511

Hmm mainboard issue then, Ive had 17MB62, 17MB60 and 17MB82 fail like this shorted Cpu due to poor heatsinking.

[vinceroger69]

Re: sharp LC-32SH130K / Vestel 17PW82-2 v.1 090511

whats the 18v feed on these psu s or isnt it used in these sets?

[ReeceyBurger123]

Re: sharp LC-32SH130K / Vestel 17PW82-2 v.1 090511

Vince 18v is not generally used on 32" sets with smaller size Mbs Ie MB62 etc. However on Vestels you never know what design they are going to use for a Tv lol Id expect you to know that by now

[vinceroger69]

Re: sharp LC-32SH130K / Vestel 17PW82-2 v.1 090511

say no more being a vestel once we know what mainboard is used in this set we can try to offer some more help and advice.

[dooosuk]

Re: sharp LC-32SH130K / Vestel 17PW82-2 v.1 090511

Thanks for all the help.

Main board is a 17MB60-4.1

The 3 diodes in circuit read 473 on my multimeter.

On looking at the caps again I'm wondering if one is slightly dome'd.

Just trying to upload pics from mobile.

[vinceroger69]

Re: sharp LC-32SH130K / Vestel 17PW82-2 v.1 090511

This is a very good price for the mainboard as long as it matches with the numbers on your old one,mainboards are hard too fault find and also fail bga solder wise etc so maybe best to swop it out
http://www.ebay.co.uk/itm/SHARP-LC32...MAAOSw8gVX--sx