OP
OP
baritonomarc
Member
After substituting the "damper bastard" i lit up the monitor, but no luck: it was playing blind and the "big white ceramic resistor" (BWCR) went really hot. As soon as i could smell the tin going fuse, i lit it off: the damper diode was gone again 
I then checked all the resistances in the power circuit (and, again, the diodeds) and they where good. I could not measure the capacitors because my ESR meter cannot go down to those 0,0047 uF and 0,001uF cap values. They are not shorted, anyhow. I then decided to substitute the VR, even if the "old" was measured good on the DVM. In addition i noticed that the F2 fuse (0,3A 250V) was not 100% ok: one of the metal heads was not tighten to the glass tube, even if the thin metal wire was still connected to the two leads and the fuse was testing good at all. The first time i measured 159V at B+. Lit it off, then lit on: 112 at B+ and the image was there! The problem is that the BWCR was still going hot to hell, and it was heating up the chassis also!!!! Then i turned it off, just to avoid to damage some component...
Having the B+ not stable drives me to the conclusion that something is wrong in the power section: i gave a check to almost everithing, with the exception of the little capacitance caps so should i now subsitute the poliestere caps in the power section?
thanks
I then checked all the resistances in the power circuit (and, again, the diodeds) and they where good. I could not measure the capacitors because my ESR meter cannot go down to those 0,0047 uF and 0,001uF cap values. They are not shorted, anyhow. I then decided to substitute the VR, even if the "old" was measured good on the DVM. In addition i noticed that the F2 fuse (0,3A 250V) was not 100% ok: one of the metal heads was not tighten to the glass tube, even if the thin metal wire was still connected to the two leads and the fuse was testing good at all. The first time i measured 159V at B+. Lit it off, then lit on: 112 at B+ and the image was there! The problem is that the BWCR was still going hot to hell, and it was heating up the chassis also!!!! Then i turned it off, just to avoid to damage some component...
Having the B+ not stable drives me to the conclusion that something is wrong in the power section: i gave a check to almost everithing, with the exception of the little capacitance caps so should i now subsitute the poliestere caps in the power section?
thanks
