Hey,
I picked up a dead Spy Hunter recently, and I've narrowed down the problem to the linear PS (swapped it w/ a good one). Typically these are pretty easy to diagnose, but I'm having issues tracking down the problem on this one. It's physically in great shape w/ no acid damage. Basically, the +5V is low, and resistor R104 (10ohm 5W) gets REALLY hot.
I pulled/tested all the transistors on the +5V rail (Q103, Q104, Q105), and even swapped them after they all tested fine, and I also swapped U2, but nothing seems to make a difference. Has anyone had a similar problem, or have any ideas?
I'd really like to repair this rather than using a switcher adapter.
Thanks,
DogP
I picked up a dead Spy Hunter recently, and I've narrowed down the problem to the linear PS (swapped it w/ a good one). Typically these are pretty easy to diagnose, but I'm having issues tracking down the problem on this one. It's physically in great shape w/ no acid damage. Basically, the +5V is low, and resistor R104 (10ohm 5W) gets REALLY hot.
I pulled/tested all the transistors on the +5V rail (Q103, Q104, Q105), and even swapped them after they all tested fine, and I also swapped U2, but nothing seems to make a difference. Has anyone had a similar problem, or have any ideas?
I'd really like to repair this rather than using a switcher adapter.
Thanks,
DogP