Thanks, Jim, for pointing out that procedure. The Sercice Manual copy on Club 100’s site is clear on how to do that. I may try it. You’re right - it would have been so nice to have the jumper wire locations easily accessible - even to have had actual jumpers to just add or remove as desired. That would have been too easy for the end user. :)
However, do you think I’d run into problems with charging speed or capacity if I use standard NiMH batteries available off the shelf today? I’m hoping not. I believe the 102 is harder to access than the 100, but does anyone know of a similar mod for the 102? Best wishes, Anthony On Thursday, November 1, 2018, Jim Anderson <[email protected]> wrote: > > -----Original Message----- > > > > Hi, everyone - for the M100, there was a simple (doc available off our > > site) resistor modification so that rechargeable batteries could be > > charged when the computer is plugged in. Seems to work fine. > > > > Is there any such (relatively simple) modification for the 102, 200, or > > 8201? Thanks. > > There's a relatively simple mod Tandy made provision for in the T200 which > enables charging of NiCd batteries (and, iirc, modifies the low battery > indicator behaviour appropriately). It's documented in Appendix A-1 of the > T200 Service Manual and involves soldering two jumpers into through holes > provided for this purpose on the memory PCB (J301 and J302). They even > made provision for putting a screw in the battery door (and putting a red > label on it) to keep the user from replacing the NiCd batteries with > alkalines after the mod was done. > > It would have been really nice if they had made the jumper through holes > accessible from the RAM/ROM compartment, but they're just far enough off to > the side and you have to take most of the machine apart to get to it. This > isn't a huge deal imho if you've taken electronics apart before, but the > flex cable for the screen can be a challenge if you haven't dealt with it > before. The Service Manual has detailed disassembly instructions on pages > 2-1 through 2-4. > > > > > > > > jim >
