68kMLA Classic Interface
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| Click here to select a new forum. | | Newton MP2100 Repair | Posted by: Surfingmonkeys on 2026-06-10 11:03:31
Hello everyone,
I have a Newton MP2000 with the MP2100 upgrade and it does not power on - looking at the logic board, I noticed that the fuse at F1 was blown (with one side shorted to ground) and capacitors C153 and C147 appear internally shorted when checking with a multimeter. I fear that this Newton could have had a reverse polarity charger plugged into it, causing these issues. I have a working 9W original Newton AC adapter to test after I try to repair it by replacing these components. However, I wanted to ask if anyone had any experience with such repairs or knowledge if other components are likely to fail when a reverse polarity event happens, in case I need to order additional parts before I start the repair. | Posted by: splorp on 2026-06-10 13:18:25
I replied to your post on TinkerDifferent, but will post my response here as well:
I would suggest contacting Frank Gründel at PDA-Soft.
He is the most knowledgeable person I known for determining what to do with Newton hardware issues.
There are a few folks on the NewtonTalk mailing list that have complete various repairs as well. | Posted by: bibilit on 2026-06-15 05:31:09
Hi, hard to say, a tantalum capacitor is more prone to blow away than to be shorted.
I will say, something else is shorted and you are finding shorted capacitors instead.
What i will do, is remove the capacitors from the board and see if the short is still present or gone.
Then you can move ahead in the troubleshooting. | | 1 |
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