HELP ! ACOUSTIC SOLUTIONS ASTVD211535-2C--- LCD TV/DVD

[feenix]

Ran for 5 yrs long hrs no probs
Now wont start led just flashing on/off @ 1/2 sec intervals with slight clicking noise so assume s/m power supply fault
Anyone been ther and where the heck is the AS helpline or spares site

I can post a pic of board if poss

Thanks All

[dougc]

Show us a picture.

[feenix]

Show us a picture.

OK how do I go about that?

[dougc]

Hi, From what I could see on your picture I don't recognise that panel. Are there any output voltages from it?

[Turnip]

Hi Feenix,

What piccy ? sounds a bit Vestel to me - give some panel numbers, or real piccies - Chris

[feenix]

Hi, From what I could see on your picture I don't recognise that panel. Are there any output voltages from it?

I have checked diode and the two main drivers on heatsinks but a gegeral opinion poits to capacitiors and no way to test these so cant check votages at mo.further A/S have changed names and dont have their site working yet
Been on net but no one has this unit ie partsmaster ect

Cheers old bean

[feenix]

Hi Feenix,

What piccy ? sounds a bit Vestel to me - give some panel numbers, or real piccies - Chris

Trust you got that Chris I dont know how to put on forum

Cheers

[Turnip]

Hi Feenix,

Thanks for the pic - haven't seen one exactly the same but last similar one I met had a duff chopper driver chip, think is was a SG6841SZ.

Attached your pic - Chris.

[feenix]

Hi Feenix,

Thanks for the pic - haven't seen one exactly the same but last similar one I met had a duff chopper driver chip, think is was a SG6841SZ.

Attached your pic - Chris.

-------Yup no  one can identify or supply this board!   ref that chip----          

Is that the small black chip with 2 legs front and 2 back? says IC2 see it on top of transformer (no IC 1 anywhere)

Also there is a diode near one heat sink --see--  near power resistors on left hand side-- at the bottom it was like carbon but cleaned it off looks ok not shorted or o/c  may be a zener but get sucker tomorrow so can remove and check it prop all capacitors look mint so who knows

[feenix]

Thermistor near top coil left h side in black  is shorted heat makes no difference to reading this could be the culprit as probably anti-surge? MF72  5 D11    and looks like Ic1 is under board

Cheers

[feenix]

Groan  my local supplier does not keep thermistors-typical

[sparky]

if you d'nt no what you are doing measuring components you
could do more damage than good  try and get a replacement panel
make sure you but all the parts numbers in google and search for one
dave

[feenix]

If only I could sparky if only I could

Thermistor is shorted no doubt about it but this panel most be well tired by now

Looks like a bin job

[Keith]

Hi

the thermistor is probably a NTC surge limiter and will read 10 ohms or less, so is more than likely not faulty

Keith

[feenix]

Yes but no amount of heat brings a change in value which it should
Looked all over for a board and it is hopeless even used and breakers I will have a play after xmas but with the price of another is it really worth it