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The best course of action is to do a factory reset on the TV. That will clear all the settings on the TV back to when it was first made. Hopefully that will change the settings back, so that the other box will work with it.
Well, you have a couple options with this. You can use either coax cable, or RCA cables. If you use coax, you want to connect it on the receiver that says TV set out, and out the tv set on channel 3 or 4. If you use RCA cables, you want to connect these to the color coded connections on the back of the receiver labeled with a Green 1. The tv will need to be on channel 3 or 4, and a video in put, usually Video 1 or 2.
I would need to know the model number of your TV to be sure. But the RCA plugs should work (tri-colored cords... Red, White, Yellow typically) But if it's a combo TV/DVD player... you probably need to change the input to AUX1 or whatever the tri-colored RCA jacks are plugged into... and not on DVD setting. Try that. and advise back!
Because your TV is an older one, it might not have, what they call RCA inputs (the 3 colored cable) Red-audio right, White-audio left, Yellow-video. If I understand you.
You do have the option of using the 75-ohm coaxial cable inputs. Signal comes in from outside to the 722k, Output of the 722k to the 75ohm coax input on the back of the TV. Tune your TV to ch. 3 or 4. Make sure the switch on the back of the 722k is set to the same.
If you really want to use the RCA colored cables, then you need to buy an RF modulator, which integrates older tv's to newer products. But usually dvd players, not necessarily cable boxes, but it would work if hooked up correctly.
You plug the RCA red, white and yellow from the 722k, into the rf modulator, choose channel 3 or 4 on the modulator
Connect 75ohm coax cable from rf modulator to TV 75ohm coax cable input. Choose channel 3 or 4 on the TV.
You either have a bad CRT or a Shorted Red Output IC/Transistor. One other possibility is if
someone turned the Screen Control down if it is accessible from the back of the set.
Hope this helps,
They make two different color wheels for the Rca DLP are you positive you got the right one. As usually its a straight forward install no adjusting needed. Post the chassis number off the back of your set and I will try to help you out with it.
# 1 above you have covergence problems ,there is a service flash from rca to fix your fault,ask your tv shop. fault # 2 above turn off the color and adjust your screen settings for a grey picture,set brightness and contrast to middle settings. # 3 fault read #1 cause if your auto focus will not correct you require service there is a harness connector that looses connection and causes several fualts on the 52" rca's you can repair the fault but if you miss the harness replacement you will do it again.