didyman

Have skills in electronic? Failing capacitors often play such nervous games.

Mickstafa, the power supply, wich fails to output voltages when any kind of load appears, mostly means these reasons: -The power supply's primary side has a defected puffer capacitor, wich leads to primary voltage drop down rapidly to a level that the PWM controller of the PSU fails to working. -The primary switching transistor(s) has problem, one of the half bridge is not functional correctly -One working resistor of the primary swithces died or changed value due to wear. -The feedback of the psu is broken up, or incomplete -Secunder electrolythic capacitor(s) failing -Secunder rectifier(s) failing -High frequency decoupling capacitor is broken If You have knowledge to measure them, try the high current active devices first and their immediate vicinity and go for caps after them.

But anyway, i have to find a value, as i mentioned in my first post, any other version of the board would be fine. R25 can be found on the left-lover side of the main transformer (where the flashlight made the panel a bit unreadable). Your version of PCB holds the same controlling scheme as far as i know, so your panel also have a resistor coupling one of the legs of the transformer to the ground. That resistor is what i need. Please, do a search for it for me! Don't care about "R25" (as it changes over the versions of the panel), just look the legs of the transformer. One leg on the secunder side will be left almost alone, without routed any else than a single resistor and the other leg of the resistor will be routed to power ground.

Right: As You can see, there are two big capacitor, the rectifier and the whole electronic so easily can be switched to 120V operation, so if the bash number is the same, the resistor also should be the same.

I can post a picture about it, if You would like.

Oooouoh! :-) That also should be good! As i mentioned, any other modell should be fine for reference. In Your case, that resistor may be the same or maybe the half of what i need. I will then figure it out from its power handling capacity and some measurements, but without an existing value, i can not start. Would You please read its value?

It is burned and can't read colour code, rendering the powersupply unusable. Can anyone help me find its value? It is placed near the main transformer on the secondary side and acting as a coupler, in series with a 47uF capacitance, to the ground, from one lead of the transformer. Any else board revision could be fine for reference. Thank You!