Question about Hitachi 50DX01B 50" Rear Projection Television

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Tuning Promblem My Problem is that the blue color is way off and im not sure on how to tune it back in. i have tried several methods but nothing has worked it seems as if the blue will not move to the left but moves right and up and down. the red is adjustable but the blue doesnt move right(needs to in order to go in focus with the other two colors). If you have any help please let me know. Thank You

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You have the typical convergence problem my friend. This is going to involve getting a service manual, locating the two convergence IC's. Then you will need to unsolder then from the printed circuit board. Then you will need to put heat sink compound on the new IC's before you replace them, then most likely, have to do some touch up convergence alignment through the service menu. If you have no solid state repair experience working on printed circuit boards, play it safe and call in a pro to assist you in this repair. Good Luck

Posted on Jun 05, 2007

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Posted on Jan 02, 2017

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My 2004 yamaha yfz 450 wont run for nothing, ive narrowed it down t the carburetor.


Hi, Anonymous if your fuel system (gas tank, filters, fuel valve and carburetor) is contaminated with ethanol sludge, varnish, rust, dirt, water etc. or your bike has been sitting for months or years without running these components must be "PROPERLY" cleaned and reassembled "CORRECTLY" before any adjustments can be made. Tuning your carburetor is fairly simple once you understand the basic principals. You engine is a simple airbox sucking air in and blowing it out, it is finely tuned at the factory for maximum performance once you upset that delicate balance by changing air filters, camshafts or exhaust systems your performance may go down the and the engine may run poorly, you need to compensate the air-fuel mixture in the carburetor in order for the engine to run smoothly and at peak performance. If you are running multi carburetors you need to sync them first and make sure your air cleaner element is clean and dry for paper elements or lightly oiled for foam and meshed elements and properly installed. Here is how and where you compensate trouble: "TIP" if your engine "BOGS" your not getting enough fuel.
1. Closed to 1/8 throttle is managed by the air screw and pilot/slow jet.
2. 1/8 to 1/4 throttle is managed by the air-screw, pilot/slow jet, and throttle slide.
3. 1/4 to 1/2 throttle is managed by the throttle slide and jet needle.
4. 1/2 to 3/4 throttle is managed by the jet needle, needle jet, main jet, and air jet.
5. 3/4 to wide open throttle is managed by the main jet and air jet.
6. Wide open throttle is managed by the main jet.
If you are running lean, spark plug electrode color is white, engine runs hot and feels like it is starving for fuel you need to go up on the jet size or move the c-clip down one notch. If you are running rich, spark plug color is black or dark gray, engine runs cool, and bogs down when accelerating you need to go down on jet size or move the c-clip up one notch. When your carburetor is properly tuned for maximum performance your spark plug electrode will be a light tan color like coffee with cream. If you prefer fuel economy over performance you can go down on main jet sizes until a satisfactory level of lower performance is acceptable versus MPH, your spark plug color will be whiter and your engine will run warmer. These tuning adjustments will only make improvements if your intake and exhaust system have no air leaks or sealing issues and the entire electrical system is in proper working order and you have no mechanical issues. For more information about your issue and valuable "FREE" downloads that you will need please click on the websites below. Good luck and have nice a day.
08 yz450 carb tuning need suggestions YZ 400 426 450
the MOTHER FCR tuning INFO thread
YAMAHA YZ450F Owner Service Manual
OEM parts for Yamaha
http://www.yamaha-motor.com/assets/service/manuals/2004/lit-11626-17-11_784.pdf

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Take the cover off and look at the cable that connects the tuner to the main board. Make sure it is connected straight and tight. Make sure all screws in the back are tight, just in case it is a grounding issue. Iff all checks out and you still have issues, replace your tuner.

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The retuning process is as follows:

  1. Press the [i+] button on the remote control to display the DIGITAL INFO menu.
  2. Press the BLUE button to display the MAIN MENU.
  3. Press the UP or DOWN buttons to highlight AUTO TUNING then press the OK button to display the AUTO TUNING MENU.
  4. Press the RED button to start the auto tuning process for all available digital channels.
  5. Wait for the process to complete.

If you wish to CANCEL the auto tuning process whilst it is processing then press the BLUE button at any time.

You may lose some channels when you retune the TV as the channels have been rearranged. To locate them look at the EPG although you may still find that some channels are no longer available on FREEVIEW. See the following link for additional information

http://www.freeview.co.uk/_retuneinfo/

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