Hello guys!
I have trouble with SN board.
As usual i replaced q531+ic502, 3RJPs, RF1501, F131 (q401,402,403) and DAF30. No luck. I heard some hiss sound and then get 7 blinks back. All fets are dead.
Replaced again. No difference, fets blowed up again.
Next time i used 75w light bulb in series with Vs supply as Alastair E recommended in another thread.
Replaced FETs again. With bulb i fried only Q621,622,623...
Next time i replaced these F131 + Q762.
At first power cycle i got 7 blinks but no chips shorted.
At second try i fried Q621,622,623 again...
Can you advise something?
I have trouble with SN board.
As usual i replaced q531+ic502, 3RJPs, RF1501, F131 (q401,402,403) and DAF30. No luck. I heard some hiss sound and then get 7 blinks back. All fets are dead.
Replaced again. No difference, fets blowed up again.
Next time i used 75w light bulb in series with Vs supply as Alastair E recommended in another thread.
Replaced FETs again. With bulb i fried only Q621,622,623...
Next time i replaced these F131 + Q762.
At first power cycle i got 7 blinks but no chips shorted.
At second try i fried Q621,622,623 again...
Can you advise something?
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