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Tandy1400 HD Power Supply Help!

Grizzly Adam

Member
Joined
Aug 26, 2023
Messages
18
Location
North-central Iowa
Good afternoon all,

I am looking at the power supply board for a friend of mine (he did nit send the whole computer, just the board and the wall adapter). I am getting some voltages, but not all. I am told that the HD and FD have the same PS, but the LT is different. Not all pins have the correct voltage (per this pinout). Pins 1, 3, 6,7,and 8 are the ones without the correct voltage. Pin 1 is getting 1.0v, the rest are at zero. This was sent to me after my friend recapped it. I just reflowed the whole board and connected a bodge wire for a bad contact. Both fuses test good. I see there are 5 test points-- does anyone have the values for these points? Any other ideas?

Thanks,
Grizz
 
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