Hi all.
A friend handed me a not-so-old Vestel effort- local supermarket branded sh*te.
It has a 17IPS71 PSU and a 17MB82S main board.
The report was 'Flashing LED'.
Before even plugging it in, I whipped the back off to see if there were any of the usual cracked/swollen cap's, shorted diodes etc., but there was nothing obvious. So I powered it up, hit the power button on the side and sure enough, the standby LED started flashing away. But, after 6 flashes, I noticed the backlight showing through the holes on the metal backplate, the set had started up! I popped a source into HDMI and everything looked fine. I left it running for 1/2 hour or so, gave it a good shake about, checked voltages here & there and everything seemed quite stable. Put it to standby, then it wouldn't start up again. LED flashing in blocks of 5, and a slight hiss/squeal from the PS (which wasn't there before- I notice these things), modulating slightly in time with the flashes. Tried freezer spray, leaving it overnight, still won't go.
I know it's not worth spending much time, money or effort on but as it's a friend.... you know how it is!
The voltages measured at the inked points are:
Stby; Trying to start (flashing led)
1) 12, 12
2) 30, 32
3) -55, -70
4) 29.7, 31.6
Here are more pic's of its innards.
Any hints would be much appreciated, TIA :-)
A friend handed me a not-so-old Vestel effort- local supermarket branded sh*te.
It has a 17IPS71 PSU and a 17MB82S main board.
The report was 'Flashing LED'.
Before even plugging it in, I whipped the back off to see if there were any of the usual cracked/swollen cap's, shorted diodes etc., but there was nothing obvious. So I powered it up, hit the power button on the side and sure enough, the standby LED started flashing away. But, after 6 flashes, I noticed the backlight showing through the holes on the metal backplate, the set had started up! I popped a source into HDMI and everything looked fine. I left it running for 1/2 hour or so, gave it a good shake about, checked voltages here & there and everything seemed quite stable. Put it to standby, then it wouldn't start up again. LED flashing in blocks of 5, and a slight hiss/squeal from the PS (which wasn't there before- I notice these things), modulating slightly in time with the flashes. Tried freezer spray, leaving it overnight, still won't go.
I know it's not worth spending much time, money or effort on but as it's a friend.... you know how it is!
The voltages measured at the inked points are:
Stby; Trying to start (flashing led)
1) 12, 12
2) 30, 32
3) -55, -70
4) 29.7, 31.6
Here are more pic's of its innards.
Any hints would be much appreciated, TIA :-)
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