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P75NF75 is listed as a 75V n-channel mosfet I don't think that would work very well for a circuit switching 300V.
The schematic above lists TS132 as a BUT11A (2000+ in stock on mouser: 512-BUT11A), a 1000V transistor. My board (or donor board) had a 12N50ES installed (650V n-channel mosfet)
I...
Seems like I forgot to include that part,
The clicking is gone now, but all 3 output caps measure 0V (The clicking came as the one of the output caps was shorted, so I assume this might be related to why it is gone now), Yes I have only powered it for a few seconds at a time to measure certain...
I have now replaced C132 with a new part, it has a slightly higher value (new: 80nF, old: 2.2nF). I tried running it directly on mains now (~230V) and the main cap charged to just above 300V, the gate pin on TS132 is now ~1.5V.
I managed to find some better documents as well, the Philips...
I did some probing around and noted down some of the difference between my board and the schematic. The source pin of the mosfet is directly connected to the negative on C112 "HOT EARTH" is noted on the pcb. C112 charges fine now, and does not get discharged right away.
As far as I can tell from...
The diodes measured 10k ohm and up in circuit, starting on overload. TS152 (SCR?) seems fine, my tester reports it as a transistor with correct pinout if it would have been a transistor. I managed to find the short now, it was TS132. 0 Ohms between all 3 pins, and replacing it seems to work. But...
Schematics (from horttanainen thread):
This schematic is for a slightly different version as mine is just a power board and not one single board. MY board stops at the 1M2, 3M2, 2M2 point and brings them to a connector together with a ground pin, but the main layout and idea is the same.
I had...
When I powered it on today it worked for some seconds and then I took the voltage up to 200V and the fuse blew. After replacing it the amp needle on my transformer goes to max right away, so one of the components has probably failed harder now. I'll probe around and see if I find where the short...
I have a Commodore 1084S-P VDE PSU (seperate board from the rest of the circuit) with some problems. If I connect it to 230V input it starts making a high pitched noise, measuring with a multimeter on the output pins gives me ~17V on pin 3 (C146) and 0V on the 25V and 125V rails. I have a spare...
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