I recently bought a 3500 parts machine. While it was clearly sold as dead, I just _have_ to try and bring it back to life. I just cant help myself from trying.
Here are the symptoms:
When I power it on, the area around the power board makes a very slight humming/hissing sound. No bong.
At first, I thought it was obviously the power board. I swapped a known good 3400 power board in, and no change. I then tried the 3500 power board in a 3400, and it booted just fine. So we can cross off the power board as the problem.
I resoldered the AC jack; another common problem. Still no go, and to check, I metered the pads with the AC in, and it was getting the juice.
I blew out the ports in case there was a short. Still no go.
I removed the comm board (I have seen dead comm boards prevent a boot), still no change.
I noticed that when I use the reset button, the 3 LED lights on my keyboard flash. Could this be a sign of a dead ADB chip, which if I recall correctly, has something to do with the startup ? Or, could it be a dead capacitor making the sound near the power board ?
This is _really_ similar to a GLOD 2400 in the sound and symptoms it makes.
thanks,
Mad Dog
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