Samsung LE37S71B dead HDMI and tuner
Good day folks. What do you make of this TV: it turns on (by remote only - more on that later), displays the OSDs fine, but doesn't tune any channels and the HDMI input doesn't work either. The VGA input works though and displays proper picture. The buttons on the unit itself don't work at all either, not even sporadically like they sometimes do when they fail. Not even the power button. The only way to operate the TV is by remote. I don't know if the issues are related. I took the cover off and had a mess around with the board. I'm pretty sure it's a hardware issue and the end result will be a board swap, but I thought I'd talk about it nonetheless.
I tried going into the service menu to reset it just for the sake of it and there's something wrong with it indeed since I noticed the "panel hours" (or something like that) was 0...unless it's been reset beforehand which I doubt, because it belonged to my boss who doesn't really have the skills to go in there and mess with the service menu. Resetting was of no use. I tried replacing the EEPROM and the same thing happened: no input on HDMI (haven't tried tuning channels, but if HDMI doesn't work it's almost certain the tuner doesn't also), so there was that.
I then had a look at the connector itself just to see if it's loose or anything and on a whim put my meter across the diode I pictured up close. I got a short, though without a schematic and without following the traces in depth it could also be a low value resistor in parallel with it. MT8293ae (large chip near the connector) could also be faulty and the replacement cost is by no means worth it, since I couldn't find it locally and where I did find it, it costs as much as a functional board, plus you have to factor in labour, so I think this one's done for....what do you guys think ?
I tried going into the service menu to reset it just for the sake of it and there's something wrong with it indeed since I noticed the "panel hours" (or something like that) was 0...unless it's been reset beforehand which I doubt, because it belonged to my boss who doesn't really have the skills to go in there and mess with the service menu. Resetting was of no use. I tried replacing the EEPROM and the same thing happened: no input on HDMI (haven't tried tuning channels, but if HDMI doesn't work it's almost certain the tuner doesn't also), so there was that.
I then had a look at the connector itself just to see if it's loose or anything and on a whim put my meter across the diode I pictured up close. I got a short, though without a schematic and without following the traces in depth it could also be a low value resistor in parallel with it. MT8293ae (large chip near the connector) could also be faulty and the replacement cost is by no means worth it, since I couldn't find it locally and where I did find it, it costs as much as a functional board, plus you have to factor in labour, so I think this one's done for....what do you guys think ?
Attached Files
Comment