New approach to dead Boom / SB3 (Classic) / Transporter

[Paul Webster]

Hi Joe - I missed the original question but why not replacing them by same original electrolytics?

I think it was because of this comment about them being fitted backwards

https://forums.slimdevices.com/showthread.php?117140-New-approach-to-dead-Boom-SB3-(Classic)-Transporter&p=1067012&viewfull=1#post1067012

[JoeMuc2009]

Hi Joe - I missed the original question but why not replacing them by same original electrolytics?

I think it was because of this comment about them being fitted backwards
https://forums.slimdevices.com/showt...=1#post1067012

Correct, it appears these capacitors are put in reverse polarity. This happened during production, and the PCB silk screen is actually reversed, too. So if you properly adhere to the silk screen during the capacitor replacement, you will actually repeat their mistake - which has me worry quite a bit as I have done tons of these repairs withough knowing.
The fact that these capacitors are the ones that lead the statistics when it comes to leaked caps in the SB3 also confirms they have issues. Using a bipolar cap instead means that there is still the capacity demanded by the circuitry but the part won't suffer from reverse polarity because that's something that cannot happen in a bipolar capacitor.