Question How to use only 1.8V line on RVL-PMS

Gi0V1Z

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Dec 11, 2020
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Hi, I’ve recently fried my RVL-PMS by inserting the cell backwards :facepalm:
I was wondering, since the component visibly fried is the U7, can I still use the 1.8V converter instead of the LDO?
I’ve found on the forum were is the 1.8V converter, but I’m not into PCBs, so I don’t get were and what voltage to put.
2907DB67-0425-4F52-8613-169290663079.jpeg

Thanks in advance
 

CrazyGadget

Crazy Helpful, CrazyGadget
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If just the BQ is fried, why not just replace that? You can probably get one off Aliexpress or see if anyone around here has a spare. Better than trying to cannibalize the rest of the PMS.
 

Gi0V1Z

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If just the BQ is fried, why not just replace that? You can probably get one off Aliexpress or see if anyone around here has a spare. Better than trying to cannibalize the rest of the PMS.
Hi, I’ve followed your advice and bought a spare of the BQ (link).
I think that’s the same part…
FCBA76CF-CE40-4FB2-8A04-E51F44D43559.jpeg
7A7F9492-8B02-43CF-9BB1-7F52912BD918.jpeg

1) Could the pinout be different?
2) It’s just a replacement or do I need some programming step in order to get everything working?
 
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