I thought I was being smart and I tried to do a mainboard swap with a newer mainboard. Unfortunately I forgot to set the 5v/12v jumper and I accidentally sent 12V into the T-con board for this panel which was only suppose to get 5V.
I think I also blew a transistor/FET on the mainboard, one that switches power on to the LVDS connecton. Luckily I was able to swap that transistor with one from a similar mainboard, and I even got it working.
I know the mainboard works now, because I plugged it into an AUO T315xw01 VC panel, which is also 5V and has the same LVDS connector pinout.
But now when I take the same power supply and mainboard from the working panel, and plug it into the one I accidentally zapped with 12V, the power light changes from red to green, goes dark, and then goes back to red. Looks like I have a short somewhere that's resetting the power supply. If I unplug just the LVDS cable, then it turns on fine, i.e backlight is working, but of course, no picture.
Just to make sure, I connected the mainboard/PS back to the good panel, and it was working fine.
So back to the bad panel, I'm pretty sure I zapped something on the t-con, but so far I've only been able to locate one fuse (marked F1_3A), which appears to be ok. The only issue I been able to find is a schottky diode that appears to be open (D504 - SCD34 3A 40V). I know it's a long shot, but does anybody have a schematic for this particular t-con? It's marked T315xw02 V9/ T260xw02 VA/ 06A53-1C.
If not, anybody want to guess how likely the only problem is just this diode? This particular board seems to be pretty common on ebay for $10 so if it's more than just a diode, I might just buy a replacement instead, but I'd be kicking myself if all it needs is a $0.50 part to get it working again.
Prior to accidental zapping, the panel was working fine with the old mainboard and the same power supply. Earlier that same night, I also managed to accidentally short out an inductor coil with a loose ground wire on the primary side of the power supply and it burned through the coil. Luckily I was able to fix that, but perhaps I really shouldn't work on these things late at night when I'm tired.
I think I also blew a transistor/FET on the mainboard, one that switches power on to the LVDS connecton. Luckily I was able to swap that transistor with one from a similar mainboard, and I even got it working.
I know the mainboard works now, because I plugged it into an AUO T315xw01 VC panel, which is also 5V and has the same LVDS connector pinout.
But now when I take the same power supply and mainboard from the working panel, and plug it into the one I accidentally zapped with 12V, the power light changes from red to green, goes dark, and then goes back to red. Looks like I have a short somewhere that's resetting the power supply. If I unplug just the LVDS cable, then it turns on fine, i.e backlight is working, but of course, no picture.
Just to make sure, I connected the mainboard/PS back to the good panel, and it was working fine.
So back to the bad panel, I'm pretty sure I zapped something on the t-con, but so far I've only been able to locate one fuse (marked F1_3A), which appears to be ok. The only issue I been able to find is a schottky diode that appears to be open (D504 - SCD34 3A 40V). I know it's a long shot, but does anybody have a schematic for this particular t-con? It's marked T315xw02 V9/ T260xw02 VA/ 06A53-1C.
If not, anybody want to guess how likely the only problem is just this diode? This particular board seems to be pretty common on ebay for $10 so if it's more than just a diode, I might just buy a replacement instead, but I'd be kicking myself if all it needs is a $0.50 part to get it working again.
Prior to accidental zapping, the panel was working fine with the old mainboard and the same power supply. Earlier that same night, I also managed to accidentally short out an inductor coil with a loose ground wire on the primary side of the power supply and it burned through the coil. Luckily I was able to fix that, but perhaps I really shouldn't work on these things late at night when I'm tired.
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