Question about Craig 731398407019 Portable DVD Player
I have audio but no video just a white screen with my portable dvd. Any suggestions are appreciated
Sounds like the player itself is OK. The white screen on power on is an indicator that the backlight and the inverter that is powering it is also OK.
A couple of things you can try:
1. If your unit has a video out, hook it up to a TV with Video INput. Normally this is a yellow colored RCA connector. On play and there's video in the TV, then your DVD decoder is OK and the problem is with the interface;
2. On the interface, any of 3 possibilities:
2.1 Converter which performs the Digital to Analog Conversion (DAC) among other things, this is a single IC chip;
2.2 the flexible flat cable; or
2.3 the LCD panel itself.
Of the 3 the only part that you can check without any special tools is the flat cable. It connects the inside of your player to the screen. You have to remove the front panel of the LCD screen and the top panel cover of the player. Once exposed, visually check for any breaks which can be caused by constant opening/closing of the lid. The preferable way to check is with the use of a continuity tester.
Should you not feel comfortable doing the above and/or it checks OK, perhaps your best bet would be to seek the services of a qualified technician since any further repair would involve electronic circuitry diagnosis, soldering/desoldering and/or component replacement.
In some instances, this problem may be caused by a faulty LCD bias from the power supply. You may have to check the voltages going in to the LCD panel.
Hope this be of some help/idea. Pls post back how things turn up or should you need additional information.
Good luck and kind regards.
Posted on Oct 21, 2007
Ok billie! you have sound but no video! and only white screen! ok first maybe you have defective ribbon wire thats connect to LCD. Second you have defective LCD!. but first try to replace the ribbon wire! before you replace the LCD!. i hope this is helpful advice to you to become Solved!
Posted on Oct 21, 2007
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