20 Most Recent Hitachi 51F710 Rear Projection Television Questions & Answers

The audio portion of the main board is failing. You can get a replacement here: TV Parts Universal TV Stands DLP Chips ShopJimmy

With set unplugged remove rear cover and follow the power cord to the fuse--good or bad? This set should also have some led lights there that are green or red---look to see if any are lit or if when plugged in with back removed which come on or go off instantly, the reason I ask is those are each tied to a voltage source and will point to where the problem MAY be.

Press Menu on the remote If you see double green, red or blue letters and a part or all of picture looks double, this means the convergence circuit is the problem. A repair like this could be $150.00 and up.If you're an electronic savvy, you can replace the two chips (stk392-***) yourself. In this case the 2 black big convergence (both with same part#) chips need to be replaced and without the model# I can't tell which ones they are but they could be one of the following: STK392-110 or STK392-120.Sometime the resistors around the ICs go bad and you inspect them and measure the with an ohmmeter. Best of luckwww.aaatvservice.com

It is possible that the main powerr supply and the SMPS has failed If so check the link below:

http://www.fixya.com/support/r5826301-working_switch_mode_power_supplies

Also if the power supply does not solve then the discharge could have gone into the main circuit. If so the processor or the main board could have failed.

Projection sets have two very common problems listed below. 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

The first common problem is convergence

These sets need to have all three colors - RED - BLUE - GREEN - lined up correctly on the screen in order for the picture to look normal. This is called convergence.

When its out of alignment the video will look 3-D, wavy, distorted, etc. Most of the time you just need to adjust your convergence in the menu. If you cannot adjust it in the menu - then your convergence is broken and needs to be repaired. Convergence problems are very common on all Projection TV sets including Sony, Samsung,JVC,Philip Magnavox,Panasonic,Akai,Pioneer, Hitachi,Mitsubishi,Zenith and others.
You can get more information and a DIY convergenece repair kit with instructions from the link below.

Here are some of the most common problems with these sets...

*Screen Looks 3-D
*Colors wont align
*Screen may look distorted or warped
*No Audio/Video - TV Shuts down - May also make a constant chirping sound

Problem #2 - Another common problem is dull or washed out video.

Your set 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 a fix using this link on Fixya http://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

Your convergence chips have may failed. You can get the parts and instructions from www.TvRepairKits.com

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. Repair kits with instructions are also avail from www.TvRepairKits.com

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.





SOLUTION #1

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

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

Three things could be wrong,

1.) If using Component Video Check to make sure all the cables are in the correct locations


2.) Video board has issue


3.) Electron Gun has an issue

this happened to me i pressed OK on the remote and luckily it went off

Unplug tv. Remove cable from tv input. Plug tv back in and turn on THEN reinsert cable to where it was previously. This procedure was given to me by Hitachi csr & it worked.

replace the red and, blue crt fuses

it sound like convergance chips might be the trouble to do it yourself is a big job get quote good luck

shaun

I have the same problem. When I move the 8300HDC away from the TV, or power off the TV, the remote responds. There seems to be some kind of RF interference, which makes no sense since the TV shouldn't emit RF, and the the box should be using IR only for remote input. My TV is a 46" LCD Samsung. Try turning off the TV and see if the 8300HDC responds to powering on and off with the remote.

but is the picture clear or blurry.or faint looking.
reply.