That's awesome, a Farad is pretty sturdy stuff i think. Sent from my iPhone
> On Sep 14, 2017, at 2:26 PM, John Gardner <[email protected]> wrote: > > I don't have a 200 schematic, but someone suggested putting the > > cap a diode drop below the rail. Worth a try, IMHO. > > FWIW, my 2 NEC 8201a Supercap transplants (2011) continue to > > behave themselves. For anyone tempted, last time I looked there > > were 5 F / 5.5 VDC supercaps out there... > >> On 9/14/17, Kurt McCullum <[email protected]> wrote: >> I had replaced the batteries in both my 102 and NEC 8201 with the >> capacitors. The NEC was just starting to corrode at the ends of the battery. >> I was thankful I caught it before it moved down to the PCB. The 102 didn’t >> really need to be done but I ordered 5 capacitors so I went ahead and did >> it. I had my 200 open because the AC adapter port was loose. It would wiggle >> up and down and only work part of the time. A simple re-solder solved that >> and I decided to swap out the battery with a capacitor while I was in there. >> But the 200 power circuit didn’t like the voltage of the capacitor so I just >> removed it and run it without backup. I run it 95% of the time off of AC and >> if I need to swap batteries without losing the contents I just keep the AC >> adapter plugged in and put in fresh batteries. >> >> >> >> From: M100 [mailto:[email protected]] On Behalf Of Rick >> Sent: Thursday, September 14, 2017 9:14 AM >> To: [email protected] >> Subject: Re: [M100] model 200 won't power off >> >> >> >> Kurt, what led you down the path of needing/wanting to change out the >> battery? >> >> I haven't cracked this one open yet so I have no idea what the physical >> condition of the battery is. It did readily charge up though with no >> fussing. I would think after all this time I would have too little voltage >> going on here versus too much. (Assuming a previous owner hasn't fiddled >> with it yet.) >> >> Rick >> >> _____ >> >> My 200 didn’t want to power down when I swapped the battery for a super >> capacitor. Too much voltage so it never shut off. Just two lines across the >> screen. I ended up removing the super capacitor and now run it without a >> backup battery. That solved my problems. The power circuit is very sensitive >> to voltage. >> >> >> >> Kurt >> >> >> >> >> >>
