Philips Monitor VS0060-80 (CM8833/1084) PSU Repair
![Philips Monitor VS0060-80 (CM8833/1084) PSU Repair Philips Monitor VS0060-80 (CM8833/1084) PSU Repair](https://www.nightfallcrew.com/wp-content/gallery/cache/16700__545x727_img_4777.jpg?9f7c22)
Philips Monitor (Black) VG0060-80 Power Stage Repair, the Monitor turned off unexpectedly without any suspicious noise.
This power stage is practically identical to other monitor models, for example: Philips CM8833 and Commodore 1084, but surely there will be others that mount the same power stage.
Repair:
After removing the PCB of the power stage i took the opportunity to replace also the power switch that no longer worked properly i also replaced the exploded fuse but obviously nothing worked.
The fault was due to the TS132 transistor completely short-circuited, the diagram says that a BU806 is installed but instead a 2SC3795B is installed.
Replaced, still nothing works, i tried with the tester but i don’t find any voltage, even the 300v +/- on the capacitor C112 at this point in addition to the diode bridge (D107/D108/D109/D110) there was only the 47 Ohm 7W resistor R103 to try and in fact it was interrupted, i replaced it with a 5W one, i didn’t have a 7W one in the lab.
I used the old trick of the 100W bulb in series, in my case instead of the fuse to avoid destroying other components.
Everything worked perfectly, the bulb turned on for a minimum amount of time and then turned off and the output voltages of the power stage are all present (125v/15.8v/25.5v).
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