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How to get to know plasmas
Ohm Supplies:
I'd read the 42v5, v6 and v7 service/training manuals which shows how they work in depth but also the common fault symptoms and reasons why. then its a case of learning each new set as it comes in.
the reliance on IPM's in the past and the cost of these ic's lead to the x-y's almost always be swapped, this and the FEts used in the psu's not being available ment that board swapping was how most engineers learnt. Service manuals even recommend it.
Recently firms that recommended board replacement have now sided towards component level repair. As these components are often FEts, diodes, resistors, fuses etc, in other words things that an experienced engineer can measure without the need for specialized equipment, more and more sets can be repaired for a reasonable price providing the boards have not been damaged. We’re getting far to much stuff in that is BER because the caps have been hacked out or shorts have been either deliberately or stupidly left on the boards then switched on
Regards
Andy
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