This one go under several names Zhaoxin or Sagitta, the repair : this one had several issues : shorted one 2N3055 and opamps supply bad / wrong design, but I was able to fix that too. so now it works perfectly nice again. after the video was made i found the schematic for GW Instek GPS-3030DD is 98% the same :-) and that schematic is easy to google.
Update : I just got an GW Instek GPS-3030DD and i must say it looks VERY different inside, some parts of the schematic are the same, but the implementation is very much different.
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#powersupply
#repair
#teardown
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I use auto generated subs, I go thru them my self, but i am far from perfect at finding all errors, so if you find errors worth fixing, please comment (or PM) with the TIME in the video you saw the error, i will be happy to fix it. This also apply to the Danish version.
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(Thanks to all my Sponsors / Traders / Swappers / Sellers / Buyers, without your support and constant flow of cool items in/out, none of this would be possible)

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