Hitachi 51G500 51" Rear Projection HDTV-Ready Television - Answered Questions & Fixed issues

Is the power somehow getting switched off, or is the screen going black? Try consulting the troubleshooting section of your owner's manual.

Your TV does have a digital tuner in it already. Also a converter box is only needed if you use an Antenna to recieve TV. So if you have Cable or Satillite, you will not need a box at all.

Yes worth repairing but not a crt problem. the crt's are powered by a high voltage transformer and sometimes it's caps that goes bad and in turn knocks out the crt's. but they are ok, it's in the high voltage line.

The Hitachi part number for the screen assembly for the 51G500a is KR02844. You can call a Hitachi parts distributor and see for yourself how much those things cost, but I warn you they are not cheap!

It does not have a "color" tube, the model here appears to be a set with 3 picture tubes---do yourself a favor and unplug it and a box if used or a receiver if in the line--wait a bit and power back to see if the units connected will reboot.Also remember to check all the inputs to see if any have color: if using the cable wire direct to a set hook a DVD etc to one of the rear audio video inputs to see if same problem there.Let me know what you find--I answer about 400 questions here each week but try hard to help anyone who responds or needs more help.

Not likely a do it yourself repair---loss of the filament voltage (6.3 volts) in the power supply of the set (some had issues where a resistor changes value).

kindly try to count the blinking led lights to diagnose the problem..after that go to this link www.fixya.com/users/bugoy31then choose any of my services offer..I will help you as much as possible..

you can and should use two of the same; the 150 and 110 are identical except the 150 is a higher current device.I usually replace both with the 150; be sure to remove all the old white heat sink compound and apply fresh as well as checking all the low value resistors around the two chips.Let me know if you need help or have questions.SD TECH

Bypassing the V-Chip Lock
After you set the lock, you need your passcode to view a V-Chip locked program, view the locked TV, cancel the lock, or enter the V-Chip Lock menus. If you forget your passcode, you can view the locked TV without entering your passcode.This is done by pressing the number 9 and QV buttons on the TV remote control at the same time, when your passcode is requested.This process temporarily unlocks the TV. When entering the V-Chip Lock menu, this process deletes your old passcode and prompts you to enter a new passcode.Press HOME to exit the menu.

I hate to say it if you can fine one it would be from another scraped set it is a chore to do for a pro.
Recycle the set correctly.
SO sorry

51G500a is a rear projection CRT type set----It has no Lamp--it uses three picture tubes.


What is the problem with the set? Verify model number posted here is or is not correct.


SD TECH

IS UR TV BULB DRIVEN IF NOT UR TV WILL NEED TO HAVE THE CONVERGENCE ADJUSTED

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.

These sets have several common problems which are listed below.

Problem #1) Convergence

Yours may have one or more of the following symptoms

• Screen Looks 3-D
• Colors wont align
• Screen may look distorted or warped
• No Audio/Video - makes a chirping sound.

Problem #2

Another common problem is dull or washed out video.
Your TV may have one or more of the following symptoms....

• Dull looking picture
• White looking picture
• Halos around objects
• Red/Orange looking picture

You can see some more examples and find the fix here...

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

Projection TV sets have several common problems listed below.

Problem #1) Convergence

Symptoms:

• Screen Looks 3-D
• Colors wont align
• Screen may look distorted
• No Audio/Video - makes a chirping sound.

Example Photo:

Problem #2 CRT Fluid has clouded over.

Symptoms

• Dull Video, Washed out
• White/Bright looking video
• Halos around objects
• Red/Orange looking

Example Photo:


You can see more examples and find a fix here...

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

Shouldn't do, just connect the antennas into the Belling-Lee TV antenna socket at rear of set, tune channels. If you antenna won't fit, you may need an "F" connector to "Belling-Lee" converter plug. You will need an "Ordinary" Yagi VHF/UHF antenna installed though. Is that what that digital one is?

you can unscrew the back top using a screw gun probably a long philips driver. the bottom of the tv is where alot of the unsafe things to touch are just focus on the top

Is it connected to an antenna? Is it all channels? Can you play a DVD? Is the contrast too high? Can you access the onscreen controls? I have the 57" model and cannot figure anything else, currently -- the manual does give any suggestions.

Read Each Step Completely - Make Sure 3 Color Guns Are Off And Cool -
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1. Remove Rear Dust Cover 2. Remove the Front Speaker Cover May be Held In By Plastic Pins and or Anchors on the Bottom Note" - Remove The Plastic Cover Just Above Speaker Cover Maybe 2 Piece. Remove The Screws Holding Top Of Speaker Cover. Then Pull Toward You the Bottom Maybe Anchored So Lift Up. 4.Once Speaker Cover Removed, May Have Screws Just Below Center Plastic Cover Remove Them, Now Remove Center Cover Between Speakers -NOTE" Do Not Touch, Move Any Color Convergence KNOBS" - Lift Front Screen UP - Towards Roof - It Has 3 Flex Grab Anchors On Top And 2 Pins One On Each Side Of TV Frame. - NOTE" Lay Screen On Floor It Is Plexi Glass So It Will Brake If Bent Or Drop Hammer On. NOTE"- May Have To Remove plastic Cover Frame positioned Around Front Screen And Then Remove Screws. 5. I Use Windex Glass Cleaner And Either Cotton Balls Or White Tube Sock On Color Gun Lens Covers And Clean Mirror Like The One In Bath Room. 6. Take White Sheet Or Bead Spread And Anchor On top Of TV With Weights, Stretch Around Each Side Of TV Use Chairs To Anchor On Each Side Of TV. Place Dust Cover Or Heavy Card Board Where Plexi Glass Was Positioned. 7. Turn On TV - go To Rear and Now You Can Adjust Colors Brightness And Low Light - High Light - Horizontal - Ect....While Looking at Picture. 8. Install In REVERSE - Order Just Wipe Color Guns Lens Last. Note" - If you have Wet/Dry Vac or Fan Or Blow Dryer Take A 2 - to - 3 Inch Paint Brush And While Brushing Circuit Boards Any Dust For That Matter Blow Dust Off And Out Even Brush Speaker Cover"...ECT...Do This Before Any Cleaning 9. Just A Thought If You Ever Want to Change Color Gun Cooling Oil - Wrap All Circuit Boards With plastic Bags And then I use Bath Towol And Paper Towols To Catch As Much Spill As I Can And Then Spray With Windex To Make Dry While Blowing Air Onto Spill - Also I have Found Clear Mineral Oil Like Johnson Baby Oil To Work As Well If Not Better Then Glycol Oil. I Get For $2.50 For 20 Oz Bottle.

This model uses two convergence IC's----if 3 D one or both are bad.


Most of the time this set uses either two of the STK-392-110 OR THE STK-392-150 CHIPS.

Both chips and any bad protection resistors around them need to be replaced and the set adjusted.

If you are able to do the repair yourself total parts cost will be under 30 dollars.

Some history for you:
This set like all rear projection tube type sets uses two chips---the ones in your set are Black in color--about 2 1/2 inches wide X 1 1/2 inches tall and are on either one large or two smaller heat sinks with fins on them.

When the chips are installed a white grease called heat sink compound is applied to the metal back of each---the grease transfers heat from the chip quickly to the metal it is bolted to.

After some years the grease dries out from the heat and one of the chips goes instantly.

You can buy a pair of the chips for your set on Ebay for less than 15 dollars plus shipping--

If you cannot do the repair yourself--shop around your area---most shops charge 300-400 for this type of repair. Whoever you get to do it make sure BOTH chips are replaced or you will have the same problem in a few months.

If you open the set and locate the chips---they will have the full STK number printed on them in white letters----there are about 12 resistors around them that need to be looked at--if any are discolored they need to be replaced.

If a shop says it HAS TO GO TO THE SHOP keep looking as any good tech can do this repair right in your home in about 1 hour---I know as I have done hundreds of them.

IF you can solder and are handy I will give you general instructions on how to do the repair and what you need---some people I talk to can either do it or have a friend who can do it for them---let me know

I can tell you what you will need aside from the parts and how to proceed with the fix---

If all this helped rate this solution---I do this here for free.

IF YOU HAVE ANY QUESTIONS OR NEED ADVICE LET ME KNOW--I am here to help people.

Regards, SD TECH