Top 20 Hitachi 43FDX15B 43" Rear Projection Television - Page 3 Questions & Answers

did you ck fuses pico green

You can try replacing the convergence IC's ...should cost you about 350-400$..Its your choice at the end of the day,,It could also be that the lamp is blown and you will need it to be replaced. Best option..call a tech and get a quote and then decide..

yes its a very easy repair just go to this website and order your ic's you get free installation instructions plus free online tech support to talk you through the process which takes about 45 mins start to finish they are located inside chassis on extreme right side on big heat sink just copy the stk numbers off the ic chips and those are the ones you need to order very easy repair
here is a link for you
http://servicemanuals.vstore.ca/

Check the 120k resistor on the red video output module. Resistor is located parallel and in front of the video output transistor heat sink. Failure can occur with blue and green also.

Try this procedure:

Adjust the green & blue CRT screens to match the red. Go into your picture menu adjust, turn color all the way down to a black & white picture. Now adjust each CRT screen so that you end up with a true black & white picture. Then adjust each focus control to get a sharp picture, and adjust each CRT focus one at a time for clarity by covering the other two up. Then go back into picture adjust and turn color half way up, you should see a better picture.

If you cannot get the blue & green to even out to a black & white screen you have other problems such as faulty CRT card on back of tube or it could even be that the video IC is faulty. If this is the case, then you may have to get a competent local technician to check the TV and get the necessary parts replaced. It could set you back between $200-$400, depending upon how many components need replacing.

You can also try a hard reset..Unplug all cables, including power from the back of TV. Wait for 4 hrs and reconnect them. Try and see if it works now.

Hope that helps...Should you have any further questions, please feel free to post them here.

P.S. Before you assign a rating, please make sure that the issue is resolved or you are satisfied. If not, please post back as to what you did, and/or any other questions you may have, and I will try to assist you as best I can. Please do not assign an ‘Inappropriate’ or ‘Thanks for trying’ rating if your issue is not resolved after the first response itself, as sometimes a bit of to and fro dialogue may be necessary before we can find a fix or an answer to your query.

If you find that the solution/answer I provided led you to, or resulted in a fix, please close the ticket with a FixYa! or Helpful rating. I would be very grateful for your show of appreciation.

Thank you for using FIXYA!

Cheers!
IrishDruid

Try this procedure:

Adjust the green & blue CRT screens to match the red. Go into your picture menu adjust, turn color all the way down to a black & white picture. Now adjust each CRT screen so that you end up with a true black & white picture. Then adjust each focus control to get a sharp picture, and adjust each CRT focus one at a time for clarity by covering the other two up. Then go back into picture adjust and turn color half way up, you should see a better picture.

If you cannot get the blue & green to even out to a black & white screen you have other problems such as faulty CRT card on back of tube or it could even be that the video IC is faulty. If this is the case, then you may have to get a competent local technician to check the TV and get the necessary parts replaced. It could set you back between $200-$400, depending upon how many components need replacing.

You can also try a hard reset..Unplug all cables, including power from the back of TV. Wait for 4 hrs and reconnect them. Try and see if it works now.

Hope that helps...Should you have any further questions, please feel free to post them here.

P.S. Before you assign a rating, please make sure that the issue is resolved or you are satisfied. If not, please post back as to what you did, and/or any other questions you may have, and I will try to assist you as best I can. Please do not assign an ‘Inappropriate’ or ‘Thanks for trying’ rating if your issue is not resolved after the first response itself, as sometimes a bit of to and fro dialogue may be necessary before we can find a fix or an answer to your query.

If you find that the solution/answer I provided led you to, or resulted in a fix, please close the ticket with a FixYa! or Helpful rating. I would be very grateful for your show of appreciation.

Thank you for using FIXYA!

Cheers!
IrishDruid

u lost hi volts. bulb most likely

stks are bad red one should fix

Go into your customer menu to closed caption and turn off the "text" mode... What you're seeing is a text box from closed caption but unless you have that additional service it will just me a black square...
Bill

Usually when your convergence ICs go they take out 1 or 2 resisitors right next to the Ics. The tower your refering to is a capacitor. it should have a rating stamped on it such as 50uf @50 etc. Hope this helps

Phil, from your description it sounds like your convergence IC`s are about to fail, the intermittent off/on cycle is because as they heat up there drawing too much current, the bowed collapse tells me it`s the vertical convergence IC that`s the culprit. You need to get a tech out asap to fix this or they could short and take out the power supply as well and that`s just mooore money to fix it, hope this answers your question, BMW Rider

bad tubes.

Do not adjust any knobs as instucted in the previous thread if you TV have a convergence problem. Doing so will only make things worse. The blog does however show you how to fix other common problems with these sets.

Here are some of the most common symptoms and example photos of a convergence problem

• 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.

Here is a quick test....

Using your original remote go-to the tv settings then goto the convergence section.

Try to adjust the red and then the blue convergence.



You should be able to move them up, down, left, and right.

If you can't move them in all directions your convergence chips are bad and should be replaced. This is a common problem.

Solution #1

You need to replace the convergence chips and convergence resistors. Check the site www.TvRepairKits.com. They have put together a kits for most models. If you don't see a kit for your set send them a quick note and they will put one together for you. Their kits include a photo instruction guide, original OEM Sanyo STK chips, convergence resistors, pico fuses, etc.

Bad Convergence circuit , replace 2 STK392-110 & fuse will take care the problem

The most likely cause for this is a problem with the convergence circuit. This consist mainly of 2 ICs and a set of resistors. It does take some skils with soldering and electronics to replace the ICs and resistors. The 'convergence kit' is available from some web based electronic stores which includes 2 ICs - STK392-150 and a set of resistors. The authorized Hitachi supplier is Tritronics, but may be available at your local electronics supply stores. Hope this helps. clickace

Well Dr. Hitachi has a sequence of L.E.D lights in back of set that lights up in accordance to what is wrong with set. there are about 8. so you need to first get someone to turn on and while looking notice which lights up first and goes out first. This tell the tech what is wrong with set. From my experience with Hitachi, I have replaced many Convergence amps which are the big STK's392-*** or something close to this depending on the set. But it most of the time gives some kind of indication before going out. Like color problems not matching up. Red, Blue or Green out of line, mostly on corners of set. If no color problems then next would be sound problems, and vertical problems. Either problem will give a no High Voltage problem like yours. Also it has little pica fuses, sometimes yellow in color. These can be open also. There are many areas to check but if you are willing you can find the problem. Remember to be safe at checking anything with set plugged in. Turn off first. Hope this helps!

you convergence and sensors are out of range ,for proper adjustment of the auto focus,eprom settings might be off also ,find a service manual and adjust and save settings to eprom ic's/

common fault on hitachi is the -26 volt supply is bad,ther should be voltage markings near or around the led's,find the b+ one thats missing or being pulled down

It sounds like you have High Voltage arc, coming from back of set. Was there ever Horzontal lines in picture when this happen. Or did your picture ever get dark and miss some color? If any of this happen then it could be coming from High Voltage Transformer, and anodes leads coming from trans.I would say clean spark gap anode leads and make sure all are seated properly(tighten). It would help if you could have the back open and notice when the set does this to see if you see sparks and were from. Hope this helps. Remember be carefull around any Voltage.

depending on the age of your set ,it might only be solder connections, or it could br a deflection to convergence problem.