Hitachi 43FWX20B 43" Rear Projection Television - Answered Questions & Fixed issues

Get the kit. It has more than resistors .

What you described sounds like a convergence problem. When convergence has failed the colors will commonly look 3D,warped, etc. This tips page here on Fixya has more details.

The model listed almost never has this problem---if using a box (cable or sat etc) IT can cause this problem and in that case unplug the box for a while and power it back---it will try to reboot.Also see if it does it or not when using a DVD etc connected to a rear input on the set--this will confirm the issue is related to tuner signal the set is using and may offer a way around the problem.

not this model AS it is a older projection set==a hint or suggestion what is the model number and brand.

Sounds (pardon the pun) like a audio circuit problem which is very rare in this set.Check a few things--if using a cable box hook cable direct to set to rule the box out.Also if you have a DVD player do you get sound that way?Last and least likely in this case is in the menu for the set is there an option for the speakers to be turned off?Failing all these--set has an audio problem and although a very good set may be too old and too expensive to fix for this problem.It is POSSIBLE also that a surround sound unit could be purchased and with a cable box with audio outputs on back installed and BYPASS THIS PROBLEM--BOX WOULD PROVIDE AUDIO TO THE SURROUND SYSTEM AND IT WOULD HAVE ITS OWN SPEAKERS AND AUDIO CIRCUIT.

bad high voltage circuit. the audio is on a different power supply circuit so you will still get sound. refer to service tech

You can call in a repair shop or you can get help from www.TvRepairKits.com . It may be bad chips, wrong resistors, loose solder, etc...hard to say.

Thats usually caused by failed convergence ICs and the associated resistors. You can get the convergence repair kit from www.tvrepairworld.com they have most model kits available.

www.tvrepairworld.com will usually have any remote needed. Send them a email indicate the model humber they respond quickly to email requests

amikeq,

You may be experiencing the beginings of a failing convergence system. To align the beam there are two ICs which take the stored positions, set by you during a convergence alignment, and move the beams to line up on the green beam for a good picture. When the ICs fail your set will look 3D but in your case you may just be seeing a partial and intermittent failure exposing the blue beam momentarily. I have a tip at http://www.fixya.com/support/r4220499-change_projection_tv_convergence_ics which explains all this and how to repair the unit as well as where to get the parts at the best price.

Thanks for using FixYa and for the great rating. Please consider a testimonial. Thank you.

hardrocko

Check/replace R42 2.2ohm resistor.

Credit: http://www.repairworld.com

All projection TV sets have two very common problems. One is convergence ( 3D/Warped video) the other is CRT fluid ( Dull Video). Here are more details and solutions for both.

Common Problem #1) Convergence has gone out

Projection TV sets need to have all three colors - RED - BLUE - GREEN - lined up correctly on the screen in order for the video to look normal. When its out of alignment the video will look 3D, wavy, distorted, etc. Most of the time you just need to adjust your convergence in the TV menu. If you cannot adjust it in the menu - then your convergence is broken and needs to be repaired.

This is a very common failure on these projection sets and a fairly simple DIY fix. All projection sets including Samsung, RCA, Sony, Philip Magnavox, Panasonic, Pioneer, Akai, GE, JVC, Toshiba, and others at some point will have the same problem.

Common Symptoms include....

• Screen looks 3D
• Colors don't line up
• One or more colors can't be adjusted when using the convergence menu.
• Screen is bowed or warped.
• TV shuts off after powering on. Power light will blink. TV may also make a chirping noise.

Here are some pics of convergence problems.






Common Problem #2) CRT Fluid is Cloudy

Projection TV tubes have a liquid coolant that is used to keep them from overheating. After many years the coolant in the blue and green tubes will become cloudy and cause the screen to look dull, red/orange, etc. You may even see halos around images.

Picture of a set that needs the fluid changed.


TV set after fluid change



SOLUTION

You can see some more examples and find a fix using this link on Fixya http://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

You need to replace the STK ICs they are big black ICs and will have Part # on them- STK392-110
Mats has ICs $9.95 1-800-628-1118

hello, the red light is flashing because theres a fault with the tv count how many times the light flashes the this gives you an error code then do a search on google or get back to me i'll try and tell you the fault and possible fix

regards
shaun

gui harcor,

Sounds like you have a classic case of convergence IC failure. It will only get worse if you do not fix it. It is repariable by anyone with patience, some skills with tools, good soldering skills and of course someone who is very conciencious. If you still want to try to give it a shot I have a tip at http://www.fixya.com/support/r4220499-change_projection_tv_convergence_ics which will walk you through the process as well as link you to the very best place to get the repair parts.

Thanks for using FixYa and for the excellent rating. Great ratings keep experts helping everyone solve their problems. Thank you.

hardrocko

It will be a major problem if you have to find parts for it.Sometimes people get the wrong type of TV so I would like you to verify that it is indeed a rear projection.If it is,they are completely obsolete.I have researched 3 or 4 of them and no matter who made them,there are no parts left.I am currently in way deep with a person who wants to attempt to fix a 61" because of it's sentimental value.That is borderline sane I think.Just finding proper parts will be next to impossible.If you are in a position to buy a new TV,please do not say yes or no yet to my solution or it cuts off our communication I think.Just comment about the rear proj. and I will get an autolink to your post and reply.There are supposed to be some real good deals on LCD's this holiday because of overstock.I will tell you a couple of things to look for if you think you will do that.Greg

Replace the jungle IC ,Chip will have this # on it TA1360N
Mats Electronics 1-800-628-1118

Yes, set uses two convergence chips, either STK-392-110 OR 120.

Both will need be replaced, I have photos and instructions if you tell me how much skill you have.

Let me know if I can help you, parts cost on EBAY under 20 dollars.

SD TECH

As you said your set uses 3 crt's red.blue and green.. not lamps.. If the red is not on it could be for several reasons other than the crt itself. From the driver ic located on the crt driver board attached to the neck of the red tube. It could also be the high voltage block or the anode lead going from the hv block to the crt itself. These carry a hefty voltage and will knock you on your but and make every filling in your mouth light up lol.. I recommend you having someone experienced check it out. As for the fluid, if the picture was good before it went out then that wouldnt be something to worry about. Removing the tubes to refill with fluid requires a massive alignment job afterwards.

STK ICs Big black ICs will have PN# on them STK392-110s use 120s Mats Electronics has them 1-800-628-1118