Question about Zenith IQC50H95W 50" Rear Projection Television

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IQC50H94W Zenith Projection tv

My tv will not power up i checked the standby power supply and it is not putting out power and it is not blowing fuses every thing i have checked on the power supply is good could i be over looking somthing the red led comes on and pulses but no other led comes on.

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Re: IQC50H94W Zenith Projection tv

I have a zenith projection tv and it powers up and has sound no picture can u tell me what this could be

Posted on Apr 12, 2008

Re: IQC50H94W Zenith Projection tv

Check the flyback/hv-spliter sounds like it could be your problem also check horizontal ic

Posted on Sep 24, 2007

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I have a 2000 zenith 50" projection. Model #

That is hard to say without diagnosing the problem and knowing what is wrong. Call a service center and askthat question there would be best and esasiet

Sep 21, 2014 | Projection Televisions

1 Answer

Tv will not come on

I see so many here with no sound/nopicture issues:


1. IF sound main fuse/s are good.
2. If no power or standby check main fuse, standby power supply and any signsof damage you can see---burnt parts etc.
3. almost all these sets the troubleshooting involves checking voltages on the main power board to narrow down theproblem.
4. Be safe and if you do not know what you are doing don't open the set.

Answers to issues:

1. RE:fuses---if a blown fuse is found get a good replacement(not the genericones like Radio Shack). Many fuses are special even aside from amperage--Don'tput a higher rated amperage fuse in the set for any reason.

2. RE: power supply in set: if total dead aside from main fuse the set uses astandby power supply that runs 7/24 and a main supply (some are combined andsome not.

Here aside from checking fuses you want to examine all the filter caps on thepower/standby to see if any are puffed up or buldged up in some fashion--Iattach a photo of a good one---top should be silver metal and PERFECTLY flatand have no brown material coming out on top or bottom.

What happens in the standby area is they use caps with too low a voltage rating(saves money) which causes them to fail in a year or two---the standby runs7/24 and the heat dries out the caps and they fail.

3. Trouble shooting consists of the above and then at some point you have to buyand try a board to see if it fixes it or not.

4. Safety first--no TV set is worth getting injured or even killed over.If set is opened at least look for puffed up and bad caps like in thisphoto.6_17_2012_3_16_16_pm.jpg6_17_2012_3_16_36_pm.jpg

Jun 16, 2012 | Zenith R57W46 57" Rear Projection...

1 Answer

I am unable to adjust the red color in the convergence adjustment on my IQC50H94W 2000 Zenith 50". From everything I read I believe I need to replace my Convergence IC Chips, however I am not 100%...

Your convergence has failed and needs to be repaired. Once quick test is to goto your convergence menu and see if you can adjust red and blue. If not its has failed and needs to be fixed. You can call in a repair shop or you can get the parts and instructions from and do the repair yourself. Its a fairly easy DIY fix.

Jul 24, 2011 | Zenith IQC50H94W 50" Rear Projection...

1 Answer

Zenith tv dosen't work

Power supply Board Call UED 1-800-648-6657 or try Encompass 1-800-638-3328

Dec 07, 2009 | Zenith E44W46LCD 44" Rear Projection...

1 Answer

I have a Zenith Projection 50" TV IQC50H94W that has a blue arc

You need to replace your STK392-150 I.C.'s, Also, check all of the large nearby resistors, make sure none are burned, and remember, you have to check the resistance out of circuit with a meter.

once the resistors are checked, and the convergence I.C.'s replaced, you should be able to converge the picture through the user menu.

Dec 18, 2008 | Zenith IQC50H94W 50" Rear Projection...

1 Answer

Zenith IQC50H94W Color Loss

check the 180 volts that is the supply of the CRT Grid.

Oct 03, 2007 | Zenith IQC50H94W 50" Rear Projection...

1 Answer

Zenith IQc50H94W

convergance amp ic are bad.

if you want the board repaired see pts corp

May 29, 2007 | Zenith IQC50H95W 50" Rear Projection...

1 Answer

Zenith IQC50H94W will not power up

First off, check Q655,EP98,and D756. If they all check good it may take a service manual to troubleshoot this set which is based on the Hitachi DP-05 chassis and is similar to their model 53FDX01B.

Jan 24, 2007 | Zenith IQC50H94W 50" Rear Projection...

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