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Equipment Repairs => LCD TV forum => Topic started by: WILLYAM1 on December 07, 2009,06:36:03

Title: fojitech(chasis 17mb22-2)model hd3200
Post by: WILLYAM1 on December 07, 2009,06:36:03

Hi everyone.
problem is no picture sound o.k.
power supply all voltage are ok 12v 24v 5v 3.3v.
back light is on  and inverter is working.
no picture no o.s.d.
main board is 17mb22-2( 3.3v 1.8v 5v 8v all ok in main board)is the problem in main (control ) or in lvds board.
anyone hade same problem??? plees need help.
thanks willyam1

Title: Re: fojitech(chasis 17mb22-2)model hd3200
Post by: sparky on December 07, 2009,09:00:12

hi
try using scart out of you tv into another tv or dvd
if it shows pic from your tv could be screen
drive panel
sparky

Title: Re: fojitech(chasis 17mb22-2)model hd3200
Post by: WILLYAM1 on December 07, 2009,09:03:48

hi sparky.
no output from scart what could be the problem?

Title: Re: fojitech(chasis 17mb22-2)model hd3200
Post by: sparky on December 07, 2009,09:53:42

hi
do you still get sound on faulty lcd when scart connected
and on other tv?

Title: Re: fojitech(chasis 17mb22-2)model hd3200
Post by: WILLYAM1 on December 07, 2009,14:29:31

hi again sparky.
still got sound un lcd tv when its conected to scart but no sound andno video in conected tv.
willyam1

Title: Re: fojitech(chasis 17mb22-2)model hd3200
Post by: sparky on December 07, 2009,15:02:38

on the other tv do you switch to av input
or scart in

Title: Re: fojitech(chasis 17mb22-2)model hd3200
Post by: WILLYAM1 on December 07, 2009,15:08:51

hi sparky .
defently  in av.
willyam

Title: Re: fojitech(chasis 17mb22-2)model hd3200
Post by: sparky on December 07, 2009,15:14:02

hi
had a samsung last week i found with workshop lights of
the screen just lite,dismantled screen drive panel one
of fuses o/c replaced fuse gingerly  panel worked ok
sparky

Title: Re: fojitech(chasis 17mb22-2)model hd3200
Post by: WILLYAM1 on December 07, 2009,15:29:33

i allready dismentel lvds board i didn't found any smd fuse.
another idea???.
willyam

Title: Re: fojitech(chasis 17mb22-2)model hd3200
Post by: sparky on December 07, 2009,15:35:09

stumped sorry

Title: Re: fojitech(chasis 17mb22-2)model hd3200
Post by: WILLYAM1 on December 07, 2009,16:07:49

any way many thanks for trying i will make more checking will keep you posted.
by the way the lvds board is320tc42v1.0.
could it be the eprom???

Title: Re: fojitech(chasis 17mb22-2)model hd3200
Post by: sparky on December 08, 2009,04:06:05

hi
i was thinking if the setting for brightness had been
corrupted eprom could be causing, like you get with
crt vestel chassis jvc

Title: Re: fojitech(chasis 17mb22-2)model hd3200
Post by: WILLYAM1 on December 08, 2009,06:36:53

hi sparky.
do you have an eprom or software?

Title: Re: fojitech(chasis 17mb22-2)model hd3200
Post by: sparky on December 08, 2009,07:24:21

sorry no
try charles hyde or wiltsgrove

Title: Re: fojitech(chasis 17mb22-2)model hd3200
Post by: WILLYAM1 on December 08, 2009,13:43:18

hi sparky.
sucses.
asi told befor 2 is better then 1.
after digging by schema i founs a smd  resistor(s467)in main board open this sould lead 3.3vto lvds cabel pin21 i repleces a 0ohm smd .
after power on half of the picture was visible and half was whith vertical lines.
found a smd fuse in LVDS BOARD I REPLECED IT WITH A 0 OHM SMD RESIS.
TV IS WORKING FINE ABOUT A 1 HOUR.
THANKS SPARKY FOR ALL YOUR AFORTS.
WILLYAM1