17PW26-4 in Xenius 32" 17MB45-3 (bad zero ohm jumper)

[tom66]

I had a blinking light of death on this set. It would try to power on then abort with a blinking light. No sound or picture.

Prelim checks showed 24V & 12V good from PSU, standby 3.3V & 5V good too. Indeed jumpering BLON on inverter gave backlight. I tested the 24V audio supply (separate from the main 24V), and found that to only be 0.5V.

Looking under the power board I found the zero-ohm link in series with the 24V audio was O/C, quite visibly blown... which I found odd. I checked the main board and found no shorts, so decided to install a new jumper. The set powered on and works fine now. Audio is fine, and the audio supply at 24.5V is present and stable.

I am confused as to why the jumper failed... has anyone else found this to happen?

Xenius LCDX32WHD88 - Vestel chassis
PSU: 17PW26-4
Main: 17MB45-3
Samsung panel

[Madbootboy]

Re: 17PW26-4 in Xenius 32" 17MB45-3 (bad zero ohm jumper)

I've also came across this fault did as you says and fitted a new link set worked fine never seen a link burnt out so bad with no short.

[tom66]

Re: 17PW26-4 in Xenius 32" 17MB45-3 (bad zero ohm jumper)

Was that on the same 17PW26-4 PSU?

[stj]

Re: 17PW26-4 in Xenius 32" 17MB45-3 (bad zero ohm jumper)

intermittent problem with the amp chip maybe - see if the audio supply/section fails again.
do you run the tv loud?

[tom66]

Re: 17PW26-4 in Xenius 32" 17MB45-3 (bad zero ohm jumper)

I don't know this TV's history all that well, it was a freebie. I have tried running the TV loud, no problem.

[stj]

Re: 17PW26-4 in Xenius 32" 17MB45-3 (bad zero ohm jumper)

can it hook to external speakers then?

[tom66]

Re: 17PW26-4 in Xenius 32" 17MB45-3 (bad zero ohm jumper)

No... Only through the line out jack.