Author: BDAqua (client46.psea.hawkcommunications.com)
Date: 11-20-2004 20:24
More info!
"Ok - removed the PC101 from my ST's powersupply.
The CNY65 has the same dimensions, despite of the 2 pins which are connecting the internal diode to the PRIMARY side.. these are in the position of the unused 2 pins of the 4 on the primary side of the 6-pinned PC101 ..
So I soldered the 2 pins on each side of the 4 pins of the IC socket which are on the primary side together - I hope one can follow
Looks like this
code:
before treatment:
Primary side
+-----+
I . . I ( "." equals unused pins of PC101)
I o o I
I I
I o o I
+--^--+
Secondary side (pin 1 /intendation)
Afterwards:
Primary
+-----+
I 8 8 I
I I
I I
I o o I
+--^--+
Secondary
The socket used is a DIL14 socket (I clipped off all but the six present pins), and soldered the 2 above illustrated pins together (I bent them kind of together to close the gap).
Then you can use EACH chip --- either the PC101 or the CNY65 in future -- verified both (the CNY65 for 5 minutes, and later on directly again the PC101)..
I took a look at the voltages while under load & without..
With a dead mobo (load) I got the same voltages (12.35 volts, 5.15 volts, -12.xx), while running free the 12 volts rail it did differ a bit (0.5 volts for about 3 seconds -- maybe I flaked around a bit whilst poking @ the lines, after that they where about identical)..
The sound coming from the powersupply is also identical to when the PC101's in charge.
The PC101 & the CNY65 are showing *identical* semiconductor graphs when I've analyzed them
with my scope's component-tester function.. the CNY65 even has 3 times the insulation factor the PC101 sports (!) - 15kV-safe... I could verify the increased quality also..
Have fun (the CNY65's are cheap & easy to obtain)
Greetings
-JanK"
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