mbates14
02-19-2007, 01:26 PM
FINALLY after more than a year or so, i am able to get around to restoring this beast. chassis KCS104H.
ok before restoring, the set would power on wiht audio, no HV.
blown damper. this verified the Tuner, IF stages, and sound stages were operational. along with its power supply.
i recapped the entire set, powered it on, same thing. i found the blown 270v scan supply fuse, and i replaced the 150ohm R110 that was blown open at some point in the past, it feeds the 270v source to the screen of the vertical output.
after erplacing the damper, and doing that, the set FINALLY came on with HV. although it had no raster, and about 30 seconds after the HV came up, that r110 blew open again, and popped the 270v source fuse again.
I still got the electrolytics to go, so this all may change when i replace all the lytics. but i dont think the lytics are responsible for blowing R110, as it has nothing to do with the lytics. it just feeds supply to the screen of the vert output. but when the HV was running, normally you can hear pulses in the vertical output transformer, i heard nothing. :)
any ideas?
ok before restoring, the set would power on wiht audio, no HV.
blown damper. this verified the Tuner, IF stages, and sound stages were operational. along with its power supply.
i recapped the entire set, powered it on, same thing. i found the blown 270v scan supply fuse, and i replaced the 150ohm R110 that was blown open at some point in the past, it feeds the 270v source to the screen of the vertical output.
after erplacing the damper, and doing that, the set FINALLY came on with HV. although it had no raster, and about 30 seconds after the HV came up, that r110 blew open again, and popped the 270v source fuse again.
I still got the electrolytics to go, so this all may change when i replace all the lytics. but i dont think the lytics are responsible for blowing R110, as it has nothing to do with the lytics. it just feeds supply to the screen of the vert output. but when the HV was running, normally you can hear pulses in the vertical output transformer, i heard nothing. :)
any ideas?