20 Most Recent Zenith IQB50M90W 50" Rear Projection Television Questions & Answers

convergence chips need to be replaced. this can be done yourself but it takes ome soldering skills. Convergence repair kits can be purchased onlne for around $65. most kits come with step by step instructions, some have DVD repiar at shop can run $300 to well over $600 god luck.

Zenith IQB50M90W... | Answered on Dec 02, 2013

To be honest I do not really understand clearly your issue so I will pose a few questions that might clear things for me up:

1. No sound from internal speakers.

2. Speakers have be checked and are not open, disconnected or switched to external or variable audio out only.

3 A DVD or similar connected to a rear video and audio input has no sound.

4. The set had sound when hooked to the bose system.

Do I understand correctly or did I miss something?

If all the above is correct the set has a audio output problem (old trick is put ear directly to a speaker and see if anything, a buzz, faint sound or nothing at all.)

Zenith IQB50M90W... | Answered on Dec 04, 2012

www.remote.com you can go there and get a remote.

Zenith IQB50M90W... | Answered on Aug 09, 2011


Below are some troubleshooting tips for a TV that has a fuzzy or blurry picture;

If your Plasma or LCD TV picture is blurry or fuzzy there are several things that may be causing the problem. It's worth running through the following list before seeking service. You may find yourself saving the full cost of a TV repair.

Make sure you are using the appropriate cable box for your TV. If you have a high-definition TV you should also be using a high-def channel box from your cable provider. Watching standard definition channels on a high-def TV can make the picture look distorted and fuzzy.

Not all cable channels are broadcast in high-definition. When you stretch a standard definition picture to fill the full frame of your wide-screen TV it may look distorted. You can try changing your TV display settings to show standard-def channels at their native resolution. This will create black or gray bands on either side of your picture.

Ideally all of your video components will be connected to your TV with HDMI cables. Your next best option will be component video cables. If your cable box does not have HDMI capabilities, contact your cable company about upgrading your box to one that does include HDMI.

Make sure there is no glare on your TV from a window or other strong light source. This can significantly degrade the quality of the image you are watching.

If your TV has digital noise reduction, try turning that feature on.

You can adjust your TV's sharpness and picture modes to see if that improves picture quality.

Try plugging the power cord into a different electrical outlet and/or surge protector. You may be receiving electrical interference through your power cord.

Trying moving any nearby electrical devices away from the TV. They may be creating interference that can degrade the picture quality.

Let me know if the above helps or not, so that I can direct you further on what do next.....

Best regards.

Zenith IQB50M90W... | Answered on Apr 14, 2011

I would check with LG/Zenith on this, there was a update sent out to add a collection cup in case this would happen. If leaked on the board it would be to costly on repair with the board is still available.

Zenith IQB50M90W... | Answered on Jan 04, 2011

ur tvs focusing side have some complaint. replace crt base sockets( three of them at a time). and check it.

Zenith IQB50M90W... | Answered on Dec 21, 2010

i just bought one of these with the same problem and had a repair man come over. said it has a h.v. power supply problem even though the red light is on and some little board cant read the handwrighting on estimate but will follow up. must replace the whole board the power supply sits on, it is the big board that the power cord connects to in the back of the tv... other board it is located behind the little panel in between the speekers on the front it is the little one in the left hand top corner. parts/labor mainly parts +/-$500. is it worth it? ihave not seen this tv working so if there are any comments about the picture quality i woul like to hear/read them. hope this helps.

Zenith IQB50M90W... | Answered on Jul 19, 2010

Hi,what's your model #?

Zenith IQB50M90W... | Answered on Mar 24, 2010

Projection TV sets have several common problems listed below.

Problem #1) Convergence


  • Screen Looks 3D
  • Colors wont align
  • Screen may look distorted
  • No Audio/Video - TV makes a chirping sound.
Problem #2 CRT Fluid has clouded over. Symtoms
  • Dull looking video
  • White looking video
  • Halos around objects
  • Red/Orange looking video

You can see some examples and find a fix here...


Zenith IQB50M90W... | Answered on Mar 06, 2010

Just read your comments and it sounds like the settings you changed where not in the tv but with the cable box.
Do you have a vcr or dvd that you could connect in the tv to try a different source of signal?
Can you bypass the cable box and connect the cable directly into the tv?
Try those and let me know

Zenith IQB50M90W... | Answered on Feb 04, 2010

Yes, with compressed air for dust contamination,.. Careful not to use solvent cleaners on plastic parts. Lens solutions can be used with a lint free cloth on glass components,.....always apply solution to cloth, then clean, avoid spraying solutions. Try and inconspicuous area first, if unsure of results.

Zenith IQB50M90W... | Answered on Jan 24, 2010

unplug the set for several minutes, then reconnect.

Zenith IQB50M90W... | Answered on Dec 24, 2009

This is a major task. You will need to remove the back cover on the bottom of the set and then the entire back of the upper portion of the set to gain access to the mirror. Did you get a replacment mirror from a Zenith vendor?

Let me know if you need more help.

Zenith IQB50M90W... | Answered on Nov 28, 2009

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