I feel so retarded, turns out that (ALL 3 TIMES I DISASSEMBLED IT) I read the HMM wrong and didn't correctly seat the CPU board. All is well now sorry to waste your time if you read this.

I have a 390x that had a motherboard with a power-on PW. I swapped that motherboard for another one, and now it won't boot period. After everything was reinstalled, I attempted to reboot the machine. Once plugged in the battery light indicates it's charging. Upon powering it on, all the lights on th...

I've got a new motherboard on the way (from eBay, so we'll see how that goes). Hope fully the on board 10L1433 is swappable for the 12P3013 I've ordered. Will post back with results.

Thanks so much to everyone who has replied. You have made a new guy feel welcome, as well as graciously shared your wealth of information. Very much appreciated. Great forum!

OK thanks. So as long as I get the fan as well a T21/22 board will work? Are there any other parts that have to be changed if I change the motherboard. Also, this means that the CPU can upgrade along with the motherboard, correct? I know these are probably stupid questions, but I just want to make s...

I'm curious about the possibility of putting a T21, T22, or T23 motherboard into a T20. Mine is without audio function, and I can't easily find a used T20 motherboard. I've found a couple T21, 2, and3's (with CPU and fan). Will these work? It seems that the cases and I/O boards are identical. Just f...

To anyone with a 390x and lots of experience: Believe it or not, my TP390X "self-generated" a Power-On PW while installing Linux. I have tried to no avail to recover it and or bypass it. Upon disassembly I found a 4-switch module at the rear of the PCMCIA jack. In my research about passwords I found...

I have a 390X (2626-FOU) that I bought used. I installed Puppy Linux on it just fine but didn't like the way it felt so I was going to change OS's. Now when I try to boot the machine it powers on to a password prompt before entering BIOS, like it has generated a SVP or something. I thought it could ...

Ok, I will look into replacing the CMOS batt. today. But I don't think thats really the problem, as the computer boots fine with the old system board just not with the replacement. I'll also try to order some new RAM sticks and see if that helps. Thanks again for all your time and input.

Thanks so much for that information. Do you happen to know if the filter is replaceable, and/or if that could be whats causing the problem. Sounds like it could be to me, but that's not necessarily saying a whole lot. On the system board note: Could I possibly find a donor board that wouldn't give m...

Don't really need a refund, only paid $11 for it. I've checked all the connections I can find, everything appears clean. The FL8 "thing", that is the marking nearest the part that I thought to have been the culprit on the PCB. My thinking was that it was kind of like a map coordinate. I'm not electr...

Hello all, I am a long time listener, first time caller. I am replacing the system board of my T20. I bought it used, and the sound doesn't work at all (speakers or jack). Found a gunked up spot on the system board @ FL8 (backside of HDD connection). I tried cleaning this and reassembling to no avai...