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1.6 motherboard power issue


Dr Bruce
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Hi all,

I have a Crystal Xbox (original 1.6 case) that won't turn on. I have recapped the power supply and mainboard (3300uf 6.3v only)as a precaution.

Power supply is good (have another 1.6 I can test it on) and I have a few readings to share (with power on).

LPC

Point 4: 3.382V. (Drops to zero when power pressed, before returning)

Point 6: 5.07v

Resistors

R3G4: R 3.385V L 3.382V

RG36: R 3.385V L 5.08V

Transistor 
D7C2 Collector : 4.22V

 

I've exhausted my knowledge now - can anyone help?

 

 

 

 

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Board startup date: April 23, 2017 12:45:48
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