Panasonic SJ-MR230 Common Power Issue - Fix Battery Door Hinge Contact With a Thin Copper Sheet

The Panasonic SJ-MR230 is a fun, MDLP-capable recorder that's known for its signature speakers and dock that resemble an answering machine or 10-key. Jokes aside, the small speakers sound surprisingly decent and it's a nice little dock for enjoying MiniDiscs at your desk.

Often, these show up without the dock or in an unconfirmed state because of power issues. I have a few of these, and it typically is the hinge at the battery door causing problems. In this video, we'll do a bit of troubleshooting to confirm the issue, then fix it using a thin piece of copper (not foil or tape).

For the copper listed in the video, I used:
Copper sheet roll 1000mm x 100mm x 0.1mm
https://amzn.to/3L8K23A

Get the tools you need here:
https://www.technicalinitiative.com/p...

Please refer to my blog for more details!

Chapter markers
00:00 - beginning
00:28 - "no battery"
1:19 - examining the battery door
1:38 - test copper in the battery door hinge
2:10 - closer look at the hinge
2:59 - disassembly - bottom case
3:41 - a bit of cleaning...
5:20 - testing with a longer piece of copper foil
6:28 - reassembly - bottom case
8:16 - setting up the dock and speakers
9:45 - copper piece from a roll of thin copper
11:54 - testing
12:40 - take the battery door cover off
16:02 - bend the copper over the "finger" on the battery door contact
17:50 - image - soldered in place from the rear and near hinge



Blog post:
pending

Get the tools you need here:
https://www.technicalinitiative.com/p...

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