magnavox help - Videokarma.org TV - Video

radotvguy · #1 11-30-2008, 11:57 AM

Well i usually only work on old tube radios and tvs , however my brother gave my a newer tv to fix . Anyhow its a maganavox model number no #25TR12 C 102 . chassis no # 25p606-00aa . Tv is dead, and the fuse is good , as cord good as well . Check fuse and components in that area which seem to be ok . Anyhow after poking around a bit i found R432 burnt open , i do not know the value of it and its toasted and unreadable . I am working without a schematic and probably should order one however i dont want to invest too much into this set . Its from 1995 . Anyone know the value of R432 and does anyone know of this type of issue with this set . Any help would be gladly appreciated .

rcaman · #2 11-30-2008, 04:30 PM

r432 is 1k ohm. there is a str30130 regulator that needs changing and the 100mfd @ 200v behind the flyback. steve

radotvguy · #3 12-01-2008, 06:28 PM

would anyone know the part number to Q400

rcaman · #4 12-02-2008, 12:41 PM

q400 i always use nte198 c432 is the location of the 100mfd cap. you need to see if the horiz output is shorted also. steve

radiotvnut · #5 12-02-2008, 12:59 PM

If the HOT is shorted, there is a small fuse that's soldered to the PC board that's probably open. It does not look like a fuse and is about the size of a diode. I think it's location number is F401.

radotvguy · #6 12-02-2008, 02:04 PM

thanks guys, i have the rugulator, capacitor and resister on its way from moyers . I will check the HOT tonight . Q400 did not seem to test good and i might just go ahead and replace it . However i tested it in circuit and didnt remove it .

rcaman · #7 12-04-2008, 07:25 AM

if it didnt check shorted it probley ok. those are good chassis. steve

radotvguy · #8 12-04-2008, 09:22 AM

the regulator , resister and capacitor came in last night . I will be installing them in tonight and check the other two transisters as well .

thanks for the help

mike

radotvguy · #9 12-05-2008, 08:27 AM

Well i installed the regulator,resister and capacitor last night . Then tested q400 and HOT ,which tested good out of circuit, then reinstalled into circuit . Firied it up and its a runner !!!!!!!

thanks for all the help from my fellow AK members

thanks guys

freakaftr8 · #10 12-08-2008, 02:27 AM

Thats awesome! Always good to see an operating set