Roland Huisman
Veteran Member
Hi, can anyone tell me where I can find the schematics of the Joule Power 107-001-027 ? Thanks in advance!
Regards, Roland
Regards, Roland
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Schematics Joule Power 107-001-027 (power supply RX50-R)
- Thread starter Roland Huisman
- Start date
Roland Huisman
Veteran Member
Bump, anyone any ideas? The power supply seems to be a third party part. But I was hoping to find the schematics. Thanks in advance!
MattisLind
Veteran Member
What about trying to reverse engineer it? I did that for a couple of PSU without schematics. It was quite interesting to learn how they were designed. The PSU you have at hand look sufficently simple to rev eng quite easily.
gwiley
Experienced Member
I was thinking a similar thing but didn't mention it. It's a single layer and the component density is rather low so it's possible to follow the traces (none hidden underneath components) to draw a schematic. Takes time though, that's the problem. But, of course, if there's a schematic out there on the web somewhere, that's even better.
Roland Huisman
Veteran Member
Yes I could draw the schematics indeed. But I thought that DEC was well documented, so I prefer the original schematic instead of spending a few evenings to draw it myself...
Regards, Roland
Regards, Roland
gwiley
Experienced Member
Maybe we can search the higher level equipment that this supply is from. Where is it used?
I see date codes: 8431 on the high voltage switching transistor and 85?3 on the opto-isolator.
I tried some searches a couple of weeks ago but the word "joule" in company name is unfortunate. There was a lot of noise in the search results.
I see date codes: 8431 on the high voltage switching transistor and 85?3 on the opto-isolator.
I tried some searches a couple of weeks ago but the word "joule" in company name is unfortunate. There was a lot of noise in the search results.
Roland Huisman
Veteran Member
The power supply is used in the External RX50-R or external hard disks like RD54. In this case a RX50-R with a RD54 mark on the case, but they will probably be the same.
Several of the output capacitors were bad, but I have already replaced them. The power supply worked a full day on a dummy load, but the power supply made a weird noise at switching off. When you switch it off it tries to remain its outputs voltages. You could hear the power make a beeping noise until the mains capacitors were empty too. Now the BUS13A transistor is blown and I think this was caused by a bad solderjoint on the transformer... But I would like to check the electronics first before I put in a new one and that one blows up too...
Several of the output capacitors were bad, but I have already replaced them. The power supply worked a full day on a dummy load, but the power supply made a weird noise at switching off. When you switch it off it tries to remain its outputs voltages. You could hear the power make a beeping noise until the mains capacitors were empty too. Now the BUS13A transistor is blown and I think this was caused by a bad solderjoint on the transformer... But I would like to check the electronics first before I put in a new one and that one blows up too...
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