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The Water Cooler
General Discussion
Any Electronics Nerds or Gurus on OSA?
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<blockquote data-quote="Dr_Mitch" data-source="post: 4245438" data-attributes="member: 7417"><p>There will be a failed (internally shorted) electrolytic capacitor, or one of the MOSFETs, dumping current to ground causing the error. If you have an error code, the will be some kind of reference material in existence that will interpret the error code, however that may reside only with the OEM as trade secret in order to protect IP, which is extremely common for electronics even if purely a cultural holdover for circuits that now exist en masse from all producers. I would call the OEM and ask what the error code means and if it tracks to one of the two boards you reference.</p><p></p><p>If OEM can’t help, and you don’t see clear evidence of a component or circuit trace that “let the smoke out”, look at the capacitors that are shaped like cans for swelling on the top surface or oil leakage around the bottom. The caps that turn half waves into ripple current are where I would start. If the caps look fine, they might be fine and it’s more likely a MOSFET, but the reality is that >99% of electronics failures not caused by human malfeasance or natural disaster since electronic circuits were invented in the early 1900s are due to failed electrolytic capacitors, even in modern times. Most of the rest of that 1% is the doped ion maxtrix in a transistor becoming depolarized over time. Nothing lasts forever, and electrolytic capacitors are the cheap throwaway trash that make electronics a disposable commodity.</p></blockquote><p></p>
[QUOTE="Dr_Mitch, post: 4245438, member: 7417"] There will be a failed (internally shorted) electrolytic capacitor, or one of the MOSFETs, dumping current to ground causing the error. If you have an error code, the will be some kind of reference material in existence that will interpret the error code, however that may reside only with the OEM as trade secret in order to protect IP, which is extremely common for electronics even if purely a cultural holdover for circuits that now exist en masse from all producers. I would call the OEM and ask what the error code means and if it tracks to one of the two boards you reference. If OEM can’t help, and you don’t see clear evidence of a component or circuit trace that “let the smoke out”, look at the capacitors that are shaped like cans for swelling on the top surface or oil leakage around the bottom. The caps that turn half waves into ripple current are where I would start. If the caps look fine, they might be fine and it’s more likely a MOSFET, but the reality is that >99% of electronics failures not caused by human malfeasance or natural disaster since electronic circuits were invented in the early 1900s are due to failed electrolytic capacitors, even in modern times. Most of the rest of that 1% is the doped ion maxtrix in a transistor becoming depolarized over time. Nothing lasts forever, and electrolytic capacitors are the cheap throwaway trash that make electronics a disposable commodity. [/QUOTE]
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