LG LPA-534 PORTABLE DVD SCREEN IS WHITE, but I can use the machine by running cables from AV outputs purchased used and do not have manual, and cannot find one online

SOURCE: LST-3510A

Hello, I've been reading up on the LG LST, I got the same device. Two options that you may want to try (and there may be a third). 1st) Make sure nothing has happened to your DVI cable, make sure it is tight on both ends. Undo it and blow on the connectors and resecure it if need be. HDCP involves communication between the HDCP chip on your LST and the HDCP chip in you display. If you cable is loose, dog chewed or too long then it may be interfering with your HDCP handshake. 2nd) You should be able to go to RGB display option and dispay in HD over the same DVI cable. This was discussed much in the forums I have been reading about. I hope one of the above options helps you. In fact I hope the vacume or kids knocked the cable slightly loose and you are back in business after tightening it. The 3rd option would be to do a google search for LST-3510a and HDCP, you will find all kinds of solutions, work arounds and firmware update discussions. Good luck! Scott

SOURCE: No video - just a white screen

So I am guessing you have audio and no video, your monitor has went out. you can check and see if ribbon cable is slightly uplugged, but maybe just a bad monitor. These happen usually from a drop or hard hit to the unit.

SOURCE: how to use av on a lg television

Did the dvd start, if so can this be a bad dvd player. It could need cleaning. Have you tried another device, like vcr or another dvd

SOURCE: Philips 26

There is an input imbalance. Either try connecting your cables to different inputs on your TV, or try connecting to different outputs on your DVD player. (Only worry about the yellow video cable bit initially). Alternatively, try a different cable type; you'll have some ins and outs that don't use RCA connectors.

SOURCE: hook up vcr

Unhook the dvd cables from the AV1 ports on the tv. Then hook these DVD outputs to the inputs on the vcr. Then hook the vcr outputs to the tv inputs (AV1). The tv and the vcr must then be set to channel 3 in order to watch the dvd (and possibly also some menu settings such as setting everything to "component video" and/or setting the tv/vcr button to "vcr. Also set all "3 or 4" switches on the back of all equipment to channel 3. Also, don't forget to go into your tv menu and choose AV1 when you want to watch the dvd and/or the vcr.
You can also try connecting your dish to the vcr and then the vcr to the input on the tv where you HAD the dish connected. There are several combinations you can try, but just remember to always put output cables to the INPUTS of the next piece of equipment in line, and set your menu settings appropriately on all equipment whenever you change from one machine to the next.
If all this fails, then here is a 100% positive solution. Buy an "A/B" switch. It has two inputs and only one output. You could leave the dvd connected as is and connect the dish and the vcr to the two inputs on the A/B switch. Then hook the one output of the A/B switch to the tv. When you change the position of the A/B switch back and forth, you will be changing over back and forth from dvd to vcr. You can move the A/B input selection switch manually or you can buy a remote controlled A/B switch and do your switching with the remote that comes with the switch.
Keever