RF 200a4

matlark

Member
2010-08-30 5:15 pm
Hello,
First time post. I recently came across a 200a4 with the top upper 2 left mosfets blown all other components (visually) look fine. I found suitable replacements but the thing still will not turn on. Should I replace the other 6 fets on that side (Left side of pic)? Any help or tips would be appreciated.
Thanks
 

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matlark

Member
2010-08-30 5:15 pm
Here they are as best as I could measure:
pin 1 = .05
pin 2 = 4.51
3 = .07
4 = .1
5 = 1.51
6 = 3.37
7 = 0
8 = 11.68
9 = 11.09
10 = 7.03
11 = 11.68
12 = 11.68
13 = 4.93
14 = 4.93
15 = 4.93
16 = 0
I believe I started at the correct pin there was no notch on my chip to designate the top. If these voltages don't make sense let me know.
thanks