Finch
New member
I know, I should just get a switching supply and the adapter, but I already got the repair kit from Bob Roberts and installed it, so I'd at least like to get it working while I'm at it.
I installed every single component of the repair kit. The previous owner had replaced at least one of the original big caps with two caps stuck side by side.
So anyways everything is installed and I turned it on and I only get 3.8v out of the 5v line. 12v and -5v are perfect and I can adjust them with the pots, but 5v remains at 3.8 and the pot does nothing.
There are some resistors and (i think) caps on one of the ICs. I've looked at various pics of GORF powersupplies and some have these caps and resistors, some don't. There is a cap and a resistor on the back, and 2 on the front, and one pin of the IC on the front is lifted where the resistor is attacked. from the looks of the back of the board this was not original.
So I'm wondering if anyone can tell what's going on from the pictures, or has a working midway PSU of the same model as used in gorf and can tell me the configuration of their IC, and maybe I can revert this back to factory specs.
NOTE: I tried removing all of these extra components and then got no 5v at all...although at that time I didn't know that one pin was lifted.
I installed every single component of the repair kit. The previous owner had replaced at least one of the original big caps with two caps stuck side by side.
So anyways everything is installed and I turned it on and I only get 3.8v out of the 5v line. 12v and -5v are perfect and I can adjust them with the pots, but 5v remains at 3.8 and the pot does nothing.
There are some resistors and (i think) caps on one of the ICs. I've looked at various pics of GORF powersupplies and some have these caps and resistors, some don't. There is a cap and a resistor on the back, and 2 on the front, and one pin of the IC on the front is lifted where the resistor is attacked. from the looks of the back of the board this was not original.
So I'm wondering if anyone can tell what's going on from the pictures, or has a working midway PSU of the same model as used in gorf and can tell me the configuration of their IC, and maybe I can revert this back to factory specs.
NOTE: I tried removing all of these extra components and then got no 5v at all...although at that time I didn't know that one pin was lifted.