Sharp Aquos LC-32AD5E-BK Fault

[dick_barton]

Re: Sharp Aquos LC-32AD5E-BK Fault

Power supply F404 = 1.6A fuse

[Deivydas]

Re: Sharp Aquos LC-32AD5E-BK Fault

Okay so, this is what I've did, yes I'm stupid but I took a risk and it paid of, next week I'm going to buy the same kind of fuse but 2A 125V as I can't find 1.6A. The TV worked perfectly after this.

[dick_barton]

Re: Sharp Aquos LC-32AD5E-BK Fault

It would have been much safer to have soldered a fuse across the legs. Taking a chance as you said on this occasion paid off but could well have compounded your problem and increased your repair costs.

[budm]

Re: Sharp Aquos LC-32AD5E-BK Fault

Look at page 2 of the power supply SCH I supply.
Have ALL the boards connected.
Check Q422 (for 12V Linear regulator circuit), IC407 for burnt sign
Check the resistance between chassis GND and LCD+B, GND and SW+12v to see if one of them show low resistance.
Since it is running now, verify that 12V is still at 12V.
Just for testing, you can put DCA meter with peak hold in series with the fuse to see what the inrush current and the steady state current is.