call fulton radio at 1 800 248 0898 and see if they have the horiz output kit in stock. contains a new transistor and a resistor to replace the .68 one. just give them model number. and the location number. i have had this problem before, and you are right , it will come back. also you are right that these do run hot. but with the kit they hold up fine, gary ----- Original Message ----- From: "Frank Luu" <fkluu@xxxxxxxxx> To: <techassist@xxxxxxxxxxxxx> Sent: Monday, September 03, 2001 3:04 PM Subject: [TechAssist] Re: Sony KV-27HSR10 (1990) H.O.T Overheating.... > > > Hello: > My guess is that you have to replace with a new type > of transistor. Try to order one from Sony. Even though > the transistor have a same number,their > characteristics is a little different.(don't ask me > why).This problem happened to me so many times and I > finally got to order the transistor from Sony. > Also if the TV is larger than 32", I always install > extra piece of Alluminium heat sink. > Hope this help. > Frank > > --- Bruce Tiedeman <btied@xxxxxxxxxxxx> wrote: > > > > I can not find the previous post on this problem. I > > put in the original > > Output transistor , I soldered the driver > > transformer and connections in the > > Horiz. section. I did change the .47\50 cap at the > > driver transformer. > > > > Is there some thing else that has to be changed on > > this chassis. The > > transistor gets very hot. The waveform looks very > > clean at the base of the > > H.O.T . it starts to get hot after a few minutes. > > > > The original problem was a blown HOT transistor and > > the special damper diode > > . The R523 (.68 ohm resistor ) was over heated but > > not blown. I replaced > > this also. > > > > If I remember correctly these do run hot, just > > didn't wanted to send this > > out and have it come back... > > > > thanks for your input, > > > > Bruce > > B&T Electronics. > > > > > > > > Help make your TechAssist online repair tips > > database better! Submit your fixes here: > > http://www.circuitwork.com/techassist/tip/#tips > > To unsubscribe write to: > > techassist-request@xxxxxxxxxxxxx > > with unsubscribe in the subject line. > > > __________________________________________________ > Do You Yahoo!? > Get email alerts & NEW webcam video instant messaging with Yahoo! Messenger > http://im.yahoo.com > Help make your TechAssist online repair tips > database better! Submit your fixes here: > http://www.circuitwork.com/techassist/tip/#tips > To unsubscribe write to: > techassist-request@xxxxxxxxxxxxx > with unsubscribe in the subject line. Help make your TechAssist online repair tips database better! Submit your fixes here: http://www.circuitwork.com/techassist/tip/#tips To unsubscribe write to: techassist-request@xxxxxxxxxxxxx with unsubscribe in the subject line.