20 Most Recent Hitachi 50FX18B/19K 50" Rear Projection Television Questions & Answers

Sounds like one of the colours red is missing an engineer will need to check the tubes

check if you enabled the sleep timer

Hello,

The issue you describe is consistent with a power supply board issue. This is the board where the AC goes to. This problem may have occurred as a result of irregular power supply, or excess power supply or power surge.

The TV is receiving current but cannot circulate or transfer the current to other necessary part of the TV because of the defective power supply board.

I do not think it needs replacement, rather some defective capacitors are causing this issue.
Open unit up and take a look at the power supply board.You will probably see one or more electrolytic filter capacitors that are bulged up in the top-not perfectly flat like the others. Or you can just go ahead and purchase a complete power supply board for the TV.

The value of these capacitors will be different, most likely they will be somewhere around-820 to 2200uF/25 V( or /10V sometimes)

You can replace them with same values but I would recommend the voltage rating to be higher(like 35V for an original 25V) for reliability purposes.

What happens is,these bulged top capacitors will cause a low and unfiltered DC voltage=main board will malfunction(the relay will keep clicking until the caps are holding enough charge to bring the voltage up over a threshold point).

You can buy these capacitors at any Fry's or Radioshack store or you can order them online at vendors like "mcmelectronics.com"(look for electrolytic capacitors).
After replacing these capacitor(capacitors) most likely the normal operation will be restored.

Note: There may be also some other causes for this symptom ,like a defective T con board ,or main board,but the bulged top capacitors are the most common cause for this issue.

If you don't know about TV repairers, take the TV to the nearest repairman to fix the fault for you. Also, note that TV stores a lot of current, so wait a while before opening the TV back cover.

I hope this helps.

Good luck.

Hi,

I think you have accidently activated the subtile mode on the remote. Go into the menu and deactivate the CC mode and will go away.





Regards.

Press "shift" on remote to write to Rom. "Rom write" is displayed. Press shift again. Wait about 25 seconds, then press "mute" to return to convergence mode.

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 projeciton 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 photos of convergence problems.






Here is a quick test....

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

Try to adjust the red and then the blue convergence.

You should be able to move RED and BLUE in all directions - up, down, left, and right. And you should be able to get the grid straight.

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

Note: If you TV has as flash focus or magic focus button only try pressing the button. If it fails to fix the convergence your need to fix it. See below for a fix

CONVERGENCE SOLUTION

You will need to replace the convergence chips and possibly some convergence resistors and pico fuses.
This is a a fairly easy DIY job if you are handy and can follow directions. You can get complete repair kits from TvRepairKits.com or click here. They have put together DIY repair kits that include the OEM parts and step by step photo instructions for each repair. If you are not handy or can't follow directions we would suggest calling a shop.

the red light = shutdown led
all the green ones indicate the voltage lines that came up
there is a diagram inside that shows all the leds plus fuse locations. you need to check the fuses with an ohm meter to figure out which one is blow or which voltage doesn't come up. with that info, i can direct you.

Yes - You will need to either remove the circuit board or lift up the tray. If you are not sure how to do it yourself read the link below.

• This is a very common failure on Projection TV sets.
  
• 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.
  

You can see some example photos and find a solution here...

http://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

Does it chirp? If so you need convergence chips replaced.

Read the link below.

Yes - You will need to either remove the circuit board or lift up the tray. If you are not sure how to do it yourself read the link below.

• This is a very common failure on Projection TV sets.
  
• 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 Makes Chirping Sound
  

You can see some example photos and find a solution here...

http://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

Yes - You will need to either remove the circuit board or lift up the tray. If you are not sure how to do it yourself read the link below.

• This is a very common failure on Projection TV sets.
  
• 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.
  

You can see some example photos and find a solution here...

http://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

You probably have a convergence circuit failure. Replacing the Convergence IC's and check for any open resistors for the Blue Sub Yoke located near the Sub Yoke Connector should cure the problem. Most of the IC's are
STK-392-110's, STK-392-120's, or STK-392-150's. Replace them as a set.
Hope this helps,
Skyassoc

This is a problem with the convergence circuit. If you can solder, you can fix this yourself. Please note as well that there are potentially dangerous high voltages present even when the set is unplugged. That being said... Open up the back and locate the convergence ICs (large black ICs attached to a heatsink and marked STKxxx). Try resoldering the pins on these ICs first. If that fails to resolve the problem, replace the ICs. There may be other related components that need to be replaced as well, but start with the ICs.

Keep us posted.
Dan

This is a convergence problem and igf you can solder, you can probably fix this yourself. If you feel comfortable working inside the set, and are aware of the dangers of the high voltage present there. try the following: Resolder the pins on the convergence ICs. If that fails to resolve the problem, replace the ICs. These are large black ICs attached to a heatsink and should be marked STKxxx.

Keep us posted.

Dan

The horizontal IC is damaged in your tv .

You need to replace it .

KIT10 $29.50
Repair Kit for Hitachi convergence Chassis DP-14G
KIT10 Includes 2 pcs STK392-150 , 1 each of the following 1W axial lead fusible resistors:


http://www.digitalhome.ca/forum/showpost.php?p=564268&postcount=220
http://cmpalmer.blogspot.com/2006/11/fixing-my-own-tv-part-ii.html

Yes, I have seen this many times. Usually the best way is to remove the upper back cover and clean out the spider webs with a soft, dry cloth, but be careful because the mirror is mounted to the inside of the cover.

That sounds like it is not booting properly. I would check for correct power supply opperation and if not that, look for a software reloading procedure in the user instruction manual.

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I'd unplug/disconnect the Roku and after 30 seconds try the control button on the back. If you can change the input do so, then plug the Roku back in. Until you use the input button on the back to change input to Roku, you should be able to use the other buttons on the back to control the TV. If this does not work, unplug both the TV and the Roku. Wait maybe a minute, then plug the TV back in and follow the above instructions. Here are other alternatives: Using physical buttons: You can find the physical buttons on the left or right back side of the Hitachi TV. Using these keys, you can change the input, adjust the volume, or turn on Hitachi TV without a remote. Press the Input button located at the back or side of the Hitachi TV. The list of connected sources will appear on the TV screen12. Using external devices: Connect a wireless keyboard or mouse to your Hitachi TV and change the input1. Buy a universal remote: You can buy a universal remote to control your Hitachi TV and change the source.