Pioneer 1019 distorting picture on my TV

Hey rare poster here, more of a lurker. I'm not an expert by any means, so I thought I'd give it a shot and see if anyone can help a newbie out please. Used this forum to help me decide on a pioneer 5.1 speaker system and helped to get it set up as well.

I have a Pioneer VSX-1019AH-K receiver that I bought back in 2009 or 2010, I can look it up from Amazon to see exactly when if needed. Recently I kinda suddenly noticed the picture was being discolored, especially in the red range. At first I thought it was the TV or the HDMI cable, but I hooked everything directly to the TV and it works fine. What I had was my Time Warner cable HD-DVR, Xbox 360, PS3, and TV all running to the receiver. Now all of a sudden the picture has been messing up, it looks red and pixilated (spelling I know) is the best I can think to describe it. I can take a picture and try to upload it if that helps.

Any advice on how to proceed from here? I know it's not a top of the line receiver, but I'm on a teachers budget and hate to just go out and buy a new one if its something I can fix.

Thanks in advance for any information you can give me. If it is dead.....lets hope its not though....any advice on a good replacement would be welcome as well. I try to go with a good mid-line level on a lot of stuff as I don't get into messing with many settings and just want good sound and picture mainly with a potential to grow and do more down the road if I learn more.

Another thought, can i hook up all my stuff to the TV and then just have the receiver run audio?

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Sorry, wasn't sure what all to put. I had the DVR hooked up using 5 RCA component cables, everything else was using HDMI cables.

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Well I'd love to upgrade...but now isn't the time. Having to put in a new septic tank and new tires on my truck and my wife's car.

I believe it was still discolored when connecting my xbox with an hdmi

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Thanks tube, will I notice any difference in audio that way?

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Thanks again. I have 4 HDMI inputs on my TV. If I run my DVR, PS3, and Xbox to my TV and run an optical cable out to my receiver it should play all sound through my speaker system correct?

Still curious what might be causing the picture to produce messed up color when ran through my receiver.... I may have to get a new receiver to test it out.... Any input on a reliable receiver with good sound that doesn't break the bank? I don't want to just get something cheap....but I also don't want to drop a ton of cash on it either if something cheaper will still produce great sound for games and movies.

Thanks hub, you made me feel better about the current way I have it routed. I wasn't sure if it was better to route everything through the receiver or just let the TV do it. I have 4 HDMI inputs on my TV so that's enough to handle my devices. I use my PS3 for my blu-ray and DVD player, Xbox 360, DVR, and the Wii I only have hooked up by RCA cables.

I'll take a look into the other receiver you mentioned, but I will probably put it on the back burner if the optical cable works for me.

Thanks again for all the input from everyone!