Well what's a little holiday without some hardware to fix! I think how i would tackle this is to trace the positive voltage from battery through to the transformer. See if there is a place where positive voltage is missing.
If that looks good then the transformer circuit must not be oscillating. One possible cause would be a shorted output capacitor. Next I would visually inspect every cap you replaced. Make sure there are no solder bridges that might cause issues. It is also possible to create an open circuit by breaking a trace or a via when you were desoldering. Also were there areas of pcb damage at all? Good luck Steve On Sunday, December 25, 2022, Hiraghm <[email protected]> wrote: > So I decided to try recapping one of my two Model 100s. > > The ones I replaced all looked okay, no sign of leakage; I replaced the > batter which did have some corrosion on it. > > I used a Model 100 recap kit, but as the voltages didn't match on some of > the caps, I decided not to replace those. > > Like a dummy, I forgot to fire it up and test it before recapping it; it > had been working when I put it in the closet... over a year ago. > > > I made sure all the polar caps were oriented correctly. > > I put it back together, turned it on... nothing. > > I flipped the memory switch on the back to "on"... turned the machine on > and still nothing. Tried the contrast knob, no good. Tried reseating and > wiggling the batteries (I don't have a power adapter)... nothing. But when > I turned it off with the memory switch to on... the batt low light flashes > briefly. > > > So I killed my backup M100 :( > > I'm not very experienced with a multimeter, but can anyone offer an > suggestions for troubleshooting how I killed it? What may be likely causes > for its current dead condition? Where to start looking? > > >
