Question about Zenith SY2722RK TV

Open Question

Poor picture quality, Zenith CRT TV model SY2722RK

I have worked on tv's alot in the past. If I got one in that had weak color quality, I would simply install a CRT brightener. Can you recommend an easy to install color brightener for this particular model? I am currently looking at the CB-390 Color Britener online but am hesitant to purchase a unit that doesnt state it fits my specific model. Thank you, Troy

Posted by on

4 Suggested Answers

  • 6966 Answers

SOURCE: Zenith A25A11D No Red Color

Hi, If you are comfortable working with a soldering iron, a continuity (VOM) multi tester and a fair knowledge of electronic components, then perhaps you can repair the missing color red. You have to open the unit, expose the small printed circuit board that is attached to the small end of the picture tube. There will be many components present but you will need to focus yourself on three (3) transistors that are bigger than the others sometimes with an aluminum heatsink. It is also possible that instead of 3 transistors you will have one power IC. In any case these control and provide the drive for the 3 colors of your picture tube: red, green and blue. One of them is either dead or suffers from cold solder to any or all of its pins/legs. You have to visually inspect the solder joints of these big transistors/IC and determine if any is dull in color, loose of simply not connected. You may even try the shotgun approach and solder each of the pins/terminals/legs just as long as you don't cross solder creating a short between pins/legs. If this works, you're set, if not: You have to check with the use of the VOM and determine which of the 3 transistor is defective. If you are familiar checking continuity of base to collector to emitter and reverse, again you're set, if not perhaps you check all three and compare which have the same reading from the same position and which is different. Pls keep in mind the transistors have forward and reverse bias readings. If able to determine defective component, desolder, replace and solder. If it were an IC, replace the entire pack. If the above would make you uncomfortable, pls ask for the services of a qualified TV repair man and explain your problem. Hope this works out for you and give you some ideas. Pls post again how things turn up, good luck and kind regards.

Posted on Aug 12, 2007

  • 318 Answers

SOURCE: Zenith tv picture jumps after 20-30 min.

the variations of the supply causes that. a verticle stability be checked, specially semiconductors and capacitor changing valuas

IT=CV=Q AND frequincy = f=i/t

SO I is for time and T for tempareture

Posted on Mar 28, 2009

SOURCE: Zenith 32" TV picture is larger than the TV screen size.

Adjust the Aspect ratio. The manual will tell you how.

Posted on Feb 03, 2010

  • 1 Answer

SOURCE: Zenith 32" TV Chirping Noise No Picture

i have a 1999 zenith big screen,model #12902AN iF I UNPLUG IT WILL *** ON 3 SECOINDS THEN ALL THE GREEN LIGHTS ON BOARD WIL GO BACK OFF.

Posted on Sep 30, 2010

Add Your Answer

0 characters

Uploading: 0%


Complete. Click "Add" to insert your video. Add


1 Points

Related Questions:

1 Answer

My crt tv was turned off and on too many fast times. When turned on again the picture looked as if it's 3D without the glasses. what can we do to fix it?

try to replace crt socket but be sure to check # of pin. after replacing adjust focus from flyback transformer.

Apr 10, 2010 | Zenith SY2722RK TV

1 Answer

Color Problem

prob bad crt. blue gun weak. new tv is answer.

Nov 17, 2008 | Zenith B25A74R 25" TV

1 Answer

Tired with this sony tv

Sony doesn't want anyone to see a poor picture on a Sony tv so they have a circuit that blanks the video if there is a weak picture or any other problem concerning picture quality. My Sony factory Instructor told me this many many years ago. I'm feeling old...but anyway you need a technician. Sorry.


Oct 03, 2008 | Sony FD Trinitron WEGA KV-36HS510 36" TV

1 Answer

Zenith TV- greenish color

If you take off the back of the TV there are additional tuning buttons. One is for the focus. I have a model SY2551S and have the green tint problem. Have you resolved that?

Aug 28, 2008 | Zenith C27A24T 27" TV

2 Answers

Old zenith 36"

Bad CRT (the picture tube) they fail on the many of the zenith sets.

Jul 26, 2008 | Zenith C27A24T 27" TV

1 Answer

Poor picture

How old your tv? Sometime weak or poor picture depend to the old of tv, or maybe some parts inside need to replace.

Jan 12, 2008 | Sharp 25L-M100 25" TV

1 Answer

Zenith A32B43W color problem

Classic symptoms! Most of the last TV's made by the old, original Zenith company (Rauland division) had bad picture tubes even when new. This probably had something to do with their going out of business and being taken over by a much better Korean company (LG Electronics AKA Goldstar). Another lovely thing they did before biting the big one was to only sell a complete chassis as a repair part. If your TV is older and has a small white paper tag inside somewhere on the picture tube (usually near the larger brand and type number label) with the code "EIA 1101" on it, discard it. I have NEVER seen one of these work correctly! If the CRT is made by someone else, there may be slight hope. Even if the TV is not very old, if it was really made by Zenith, and not LG, the possibility of repair is slim simply because of the change of ownership. I was sad to see Zenith die such a horrible death. They used to be fairly good, but somehow never made the transition to color TV. After 1954 they were essentially moribund.

Oct 15, 2007 | RCA F32450 32" TV

1 Answer

TV Problem

picture is milky white is due to crt.if it is old set. or check video section

Sep 20, 2007 | Zenith B25A10Z 25" TV

1 Answer

Zenith 25" Color TV - Model A25A23W

Your problem is a bad connection on the CRT socket on the CRT driver board, a bad connection in the RGB driver supply from the video jungle IC or maybe even an intermittant Picture tube. the only way to tell would be to tap on the crt board while the sets playing with a non conductive insterment, and see if it changes. Now there is alot of HIGH VOLTAGE at this spot, so if you have no TV repoair experience Please stay safe and call in a pro to assist you. Good Luck Please dont forget to rate this thread.

Nov 11, 2006 | Zenith A25A23W 25" TV

Not finding what you are looking for?
Standard (CRT) Televisions Logo

Related Topics:

51 people viewed this question

Ask a Question

Usually answered in minutes!

Top Zenith Standard (CRT) Televisions Experts

The Knight
The Knight

Level 3 Expert

66372 Answers

matt martin
matt martin

Level 3 Expert

1187 Answers

Anastasio Benjou

Level 2 Expert

99 Answers

Are you a Zenith Standard (CRT) Television Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides