Question about Televison & Video
*I think I accidentally posted my question as a solution just early to someone else's similar question. Sorry.
Has anyone been able to locate schematics for the power supply in this thing? The undersized power supply seems to the main point of failure. Otherwise, I have been pleased with the unit. Mine was sent back to Polaroid for RMA back in February 2008. I don't think any warranty is in effect now.
Please let me know if any one has tried to trouble shoot the TOPOW DVD RW POWER857B power supply. Two of the chips I can not identify are the 8pin Dip 2216A & a 4in dip 7703
I have tried to locate the power supply manufacturer: Shenzhen Topow Electronics Co., Ltd. Their website is:http://www.topow.com.cn but my web browser can't handle the Chinese to English translation.
I think it is very likely that an AT or ATX power supply could be substituted if all the pinouts of the original power supply are known.
**Both times, my unit failed shortly after the fan started making noise. The problem has to be heat related.
I have repair my supply board by replace the 2 capacitors and 1
mosfet because the 5VDC was failure
the mosfet is a IRFP 150 or similar and capacitors are same models
becarefull the 330ohms resistor dont touch the capacitor
or a great risk of short circuit destroy the 5VDC
jean yves kerfers
Posted on Jan 11, 2010
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Posted on Jan 02, 2017
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