Mulja tv repair portal
Equipment Repairs => LCD TV forum => Topic started by: silva1955 on April 06, 2017,17:15:30
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Hi guys; i found this tv out in the curve and it probably stayed out in the rain a few hours or even days,i got it home and used a Fan and a heat blower to dry it,i did power it up and first thing i had a blue screen with menu which was good news,screen was good,then plugged video sources and on all video sources had synchronize issues,see video pic;
then i blew hot air with heat gun towards the BGA and synchronize issue got worse,then i blew cold air with the fan and video got stable and now i have good video on all sources,i don't know how long before it goes bad again,!
what you guys think i should do?,i'm thinking of doing the same i did to my Vizio M42Vt that had scrambled pic by doing this see utube link:and installed a computer cooling fan blowing air to the BGA.
https://www.youtube.com/watch?v=hL9-eKZv_2s
this is the sync issues before i used blowing cooling air to the BGA
https://youtu.be/3KWKMW0mbbs
https://postimg.org/image/fgl6nsett/
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Hi guys i have fixed this tv by using the Heat blower gun on the BGA ,now i'm installing a 12v fan but i want to draw the 12 v from the power supply so when i turn off tv the fan turns off too,can somebody indicate me a point in the circuit where i can connect the 12v,most of the voltage points i tested are active either tv on or off,can someone lead me to the right voltage points.
https://postimg.org/image/4vy45oglr/5a73b171/
https://postimg.org/image/pcnxdi1ub/87a33127/
https://postimg.org/image/hmlio148l/973f9e4a/
https://postimg.org/image/ykpmccbrx/2b125b8a/