I hate TV Repair !!!
Jacques Vanier
First of all excuse my english.
I'm a electronic tech working for 20 years in audio,phone sys,
fax,celllular,etc.
I like to work with logic system but i hate TV repair.
One of my friend just loss is job,no more money :-(
and he ask me just to check is TV :-(
I found the flyback was dead (open on some winding)
I look around to see if other part seem to be burn but all look OK.
I decide to make this service for my friend order a new flyback and
replace it in his TV set.(why i'm so stupid i dont know)
I just receive the new flyback after some check to be sure
it is the good one i resolder the part in place and try to turn on
the TV on and unfortunatly is dont work ( sure Murphy law )
The only things happen i hear a high tone coming from the
board(not the speaker) but nothing else no power led, no screen.
just that high freq sound.
The TV set is a Samsung
Mod CT-6816 WCX
Fab: SMX
Please Mister Guru Sam Help me
Before i go to suicide thinking.
Thank you to read me
Regards
Jacques Vanier
Sam Goldwasser
In article <01bcb006$25a20a00$482cb7cf@ctsj1112> "Jacques Vanier" <jva...@citenet.net> writes:
> First of all excuse my english.
> I'm a electronic tech working for 20 years in audio,phone sys,
> fax,celllular,etc.
> I like to work with logic system but i hate TV repair.
> One of my friend just loss is job,no more money :-(
> and he ask me just to check is TV :-(
> I found the flyback was dead (open on some winding)
Are you sure this was not normal? A failure of this type is not that
common. More common are shorts or failure of the focus/screen divider.
> I look around to see if other part seem to be burn but all look OK.
> I decide to make this service for my friend order a new flyback and
> replace it in his TV set.(why i'm so stupid i dont know)
> I just receive the new flyback after some check to be sure
> it is the good one i resolder the part in place and try to turn on
> the TV on and unfortunatly is dont work ( sure Murphy law )
> The only things happen i hear a high tone coming from the
> board(not the speaker) but nothing else no power led, no screen.
> just that high freq sound.
What test equipment do you have? If the original flyback was indeed bad,
then other parts like the HOT, fusable resistors, etc. could now be faulty.
However, the whine suggests that something is overloaded.
An excessive secondary load due to a shorted diode or IC could result
in the original flyback overheating and failing.
You will need to perform some tests.
Check the HOT and its nearby components.
Check the diodes and caps on each secondary load. It may be possible to
disconnect everything but the flyback drive winding to see if you then get
HV (you won't get the power LED probably if that is powered from one of
the disconnected loads).
--- sam : Sci.Electronics.Repair FAQ: http://www.paranoia.com/~filipg/REPAIR/
Coming soon to a computer screen near you: http://www.repairfaq.org/
Preview of V3.00 (ASCII): http://www.pacwest.net/byron13/sammenu.htm
> The TV set is a Samsung
> Mod CT-6816 WCX
> Fab: SMX
> Please Mister Guru Sam Help me
> Before i go to suicide thinking.
> Thank you to read me
> Regards
> Jacques Vanier
.