Sylvania LD195SSX flashes colors

[triplefour]

this TV has a built in DVD player. when i plug it in, it turns on by itself and then goes through an endless loop of color screens. first its an all black screen with white text that says DIGITAL TELEVISION. then its a screen of just Green, RED, BLUE, etc. none of the buttons do anything. i have to unplug it to turn it off. what could be causing this behavior???

i took it apart and unplugged the DVD drive from the mainboard. now when i plug it in, it turns on by itself and then goes through 3 screens (digital television, RED, GREEN) then goes into standby mode. the DVD light is lit up.
pressing power only gets me those 3 screens again and back to standby. none of the buttons do anything during the screens.

i uploaded some videos to youtube of what it's doing
http://youtu.be/77L_LJNpZG0
http://youtu.be/Y0_D1FZqS6I

[audiofreak19]

Re: Sylvania LD195SSX flashes colors

I'm going to say first it sounds like a mainboard issue. U can usually start around there since the tv turns on by itself when you plug it in. But first check all of your voltages on your power supply to make sure ur power supply is working correctly first.

[tom66]

Re: Sylvania LD195SSX flashes colors

Sounds like it's in factory/test mode.

[stj]

Re: Sylvania LD195SSX flashes colors

yea, i'd like to know what causes that so i can make it do it when i want it!
a usefull feature!

maybe the button-panel has a problem.
unplug the button panel & plug the tv in.

[tom66]

Re: Sylvania LD195SSX flashes colors

A lot of Vestels I know have a BURN IN MODE which does this, I've never been brave enough to turn it on incase it's a bugger to turn off again!

[triplefour]

Re: Sylvania LD195SSX flashes colors

dang the button board does not have removable connectors, the ribbon cable is soldered on each end... WHY?! is there any special trick to disable this button board without de-soldering?

[stj]

Re: Sylvania LD195SSX flashes colors

scissors?

[triplefour]

Re: Sylvania LD195SSX flashes colors

well it was a pain but i desoldered the button board. it seems to have had some effect on the situation. it still went through the test screens but now its going thru all the channels (doing an auto preset thing) it will show channel 24 on the screen then the screen will flash red for a moment and then it will show 25 and then a red flash...and so on.. also the DVD drive keeps making noise like its trying to work or something....

[triplefour]

Re: Sylvania LD195SSX flashes colors

hmm but now its just doing this endlessly... it checks out all the channels, then the component, HDMI, VGA connections...and then just starts over with the channels again!

[triplefour]

Re: Sylvania LD195SSX flashes colors

and even though i have a computer hooked up via the vga port when it gets to PC (vga) it doesnt display anything... and then it moves on to checking everything else over and over...

[triplefour]

Re: Sylvania LD195SSX flashes colors

Holy cow! it WAS the button board. after soldering it back in, everything works fine now! i guess there were some junk solder points or maybe 2 wires were touching or something and it was causing it to behave crazy...thanks for the tip, i dont think i would have gone as far if u hadnt suggested it!

[triplefour]

Re: Sylvania LD195SSX flashes colors

this forum is so freaking awesome. im sorry i waited so long to start fixing TV's!