I've been trying to rectify a fault on ferguson tv(25inc), model no;d59f. the nature of the fault is; the tv always switches itself off an on ,after sometime( with shrill noise from the line transformer ), especially when connected to the aerial and tv station very bright. i have removed the boost capacitor in the power supply with known good one,but the problem still continue.i observed that when the tv is not receiving broadcast signal,it will not switch off. i've injected a video signal throughthe av input(bypassing the tuner), the result is still the same.Arching is observed in the line transformer ,with vertical dark line streaks when the tv is about to swich off.What could be the cause of this?
tv failure
Jan 26, 2008
10 Replies
I have no tolerance for CRT problems... One little flicker and it's not fast enough to let gravity accelerate it into the trash. :P
D from BC British Columbia Canada.
Look at the name of this group again. If you are DESIGNING a TV, this is the group.
TV **repair** is in news:sci.electronics.repair.
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Considering all the OT political nonsense found here, TV repair is at least peripherally related to ED, and at one time was even a respectable path to it. Just ask JT.
-- Joe
news:sci.electronics.repair.http://groups.google.com/group/sci.electronics.repairhttp://groups.google.com/group/sci.electronics/msg/13651a897337a7a9?q...
Yep. All the practical stuff I learned from puttering around in my Dad's TV repair shop.
"ED"?? Isn't that Erectile Dysfunction ?:-)
...Jim Thompson
| James E.Thompson, P.E. | mens |
| Analog Innovations, Inc. | et |
| Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
| Phoenix, Arizona Voice:(480)460-2350 | |
| E-mail Address at Website Fax:(480)460-2142 | Brass Rat |
| http://www.analog-innovations.com | 1962 |
America: Land of the Free, Because of the Brave
And your question is what?
You have excessive HV, and the question should asked in the repair channel.
"I\'d rather have a bottle in front of me than a frontal lobotomy"
http://webpages.charter.net/jamie_5"
Now if you had one of those cheap Replica Ferguson TV's, or had the Louis Vuitton remote to go with it.... you'd be in the right place!!
(Seriously: Can't help. Sorry.)
-mpm
Seems you know little about fixing TV sets. Replace or rewind that transformer.
"Erratic Drivel", AKA: dimbulb.
Service to my country? Been there, Done that, and I\'ve got my DD214 to
prove it.
Member of DAV #85.
Michael A. Terrell
Central Florida
It's a power supply problem somewhere obviously. Definitely not a good sign to have audible and visual arcing occurring in the line transformer, and there shouldn't be any type of circuit fault that would cause this. You could make a temporary substitute for that transformer and see if the problem goes away. The TV is chock full of all kinds of fault shut-down circuitry and one or more of these can be triggered by the transformer fault.
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