Krynn72
Well-Known Member
- Reaction score
- 2,294
- Location
- Connecticut
I have a customer who has been here with this AIO Touchscreen POS system once before for a similar issue. We replaced about 9 capacitors on the MB, and it seems to have worked good for them for about 2 years. Now he's come back with another no display issue, and I'm trying to figure it out quickly and could use some help. I'm also having trouble finding a manual or anything for it to figure out the beep codes.
Full Model No: P1510-4D50-BA
Symptoms: Unit will power on, and the backlight will power on, but no display comes up. After 5-6 seconds, we get a beep code error message. It is two beeps, pause, one beep. The error does not repeat, it only happens once.
Things I've tried already:
-Found and cleaned some very, very slight possible liquid damage (I am hesitant to even mention this, because it was very minor and I've seen it on many boards before. I will attach a pic of one spot so you can see what it kinda looked like)
-I've removed the SDRAM, which results in a different beep code error, as expected
-I've replaced the SDRAM
-I've replaced the CMOS battery
-I've replaced the PSU
-I've reseated, and redone the CPU and its heatsink
-I've tested the ESR values of every capacitor on the board, and they're all fine.
-I've unplugged everything but the CPU, one of our good SDRAM chips, and the PSU, and even tested it outside the chassis
Everything has provided no change in the systems behavior.
If you look at the top of this IC, thats what the "liquid damage" looked like. It was over about a 3"-4" area on the bottom side of the board. I cleaned it all up.
Full Model No: P1510-4D50-BA
Symptoms: Unit will power on, and the backlight will power on, but no display comes up. After 5-6 seconds, we get a beep code error message. It is two beeps, pause, one beep. The error does not repeat, it only happens once.
Things I've tried already:
-Found and cleaned some very, very slight possible liquid damage (I am hesitant to even mention this, because it was very minor and I've seen it on many boards before. I will attach a pic of one spot so you can see what it kinda looked like)
-I've removed the SDRAM, which results in a different beep code error, as expected
-I've replaced the SDRAM
-I've replaced the CMOS battery
-I've replaced the PSU
-I've reseated, and redone the CPU and its heatsink
-I've tested the ESR values of every capacitor on the board, and they're all fine.
-I've unplugged everything but the CPU, one of our good SDRAM chips, and the PSU, and even tested it outside the chassis
Everything has provided no change in the systems behavior.
If you look at the top of this IC, thats what the "liquid damage" looked like. It was over about a 3"-4" area on the bottom side of the board. I cleaned it all up.
