Hi,
ur tv has problem with vertical scanning section. may be dry soldering or vertical output ic faulty.
u can easily find out the vertical section on ur tv. for that u have to
open ur tv. u can see a coil is fitted on the picture tube neck. there
are four lines coming from the neck, of which two will go to horizontal
scanning section and the remaining two will go to vertical section.
follow the two thin wire normally in color green and yellow. it will go
to a socket in the main board. trace the track from that socket in the
main board . it will lead u to the vertical scanning section. check for
any dry soldering in that section. mainly the soldering of vertical ic.
if see or not re-solder the leads of the vertical ic . then check is the
tv is ok or not. if complaint remains replace the vertical scanning out
pout ic. it will be fitted on a aluminum heat sink in the vertical
section. if u need more assistance feel free to contact through fixya.
regards
Ajin
The Ic has been replaced on numerous occasion but the issue still persists. The active and passive components in the vertical section has been check and even some replaced but the problem is still there.
Oh! After changing the vertical Ic the first time, I observed that after the television is turned on for a while, the screen slowly opens and the image, when the antenna is connected, jumps but the sound is okay.
It also seem to have a power supply problem. When the television is plugged in the relay doesn't click and as a result of that, I have to be plugging it in and out until i hear the click, only then would I be able to successfully turn it on.
When I check the standby the voltage what I get is 3vdc, could that be a factor which is causing the the delay of the relay clicking?
Standby voltage should me around 5V. Check the filter capacitor for standby power. hope it will solve the problem
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