Hi everyone and sorry to jump straight in with a request for help, but...
Having built a nice car PC, my D945GCLF2 motherboard suddenly 'died'. I bought a replacement and that went the same way in approx. 60 seconds!!
I have the ATX power indicator on the motherboard glowing but no life, no fans etc. Have stripped out all peripherals.
Both boards have the same symptoms - no life, ATX power led lit, same very hot transistor!
Unfortunately I'm not an electronics wizard but want to at least try to get one of the boards going again!
The transistor is marked with 1117A 822176 which I cannot find details of on the Internet. It measures 8mm x 4mm across the main body. I have taken resistance readings across the pins with the component in situ, using my crappy meter on the 'diode' setting and got 171 ohms across pins 1 and 2 and 18 ohms across pins 2 and 3. Also get 186ohms from pins 1 and 3. Reversing the probes has no effect on readings. (I've no idea if this means anything!!)
Here's a photo showing the 'hot' transistor: (the feint curved line above the marked component is a hair, not a crack!)
And here's a shot of the motherboard:
Any helpful advice would be gratefully received - i.e. Transistor details, common replacements, idea of what to replace etc.
Thanks!
Having built a nice car PC, my D945GCLF2 motherboard suddenly 'died'. I bought a replacement and that went the same way in approx. 60 seconds!!
I have the ATX power indicator on the motherboard glowing but no life, no fans etc. Have stripped out all peripherals.
Both boards have the same symptoms - no life, ATX power led lit, same very hot transistor!
Unfortunately I'm not an electronics wizard but want to at least try to get one of the boards going again!
The transistor is marked with 1117A 822176 which I cannot find details of on the Internet. It measures 8mm x 4mm across the main body. I have taken resistance readings across the pins with the component in situ, using my crappy meter on the 'diode' setting and got 171 ohms across pins 1 and 2 and 18 ohms across pins 2 and 3. Also get 186ohms from pins 1 and 3. Reversing the probes has no effect on readings. (I've no idea if this means anything!!)
Here's a photo showing the 'hot' transistor: (the feint curved line above the marked component is a hair, not a crack!)
And here's a shot of the motherboard:
Any helpful advice would be gratefully received - i.e. Transistor details, common replacements, idea of what to replace etc.
Thanks!