Question about Hitachi 50V500 50 in. HD-Ready LCD Television
I have a panasonic HDTV rear projector. It works fine except it is showing more yellow color. Seems like yellow is dominating the picture. Tried all color setting no go. I cleaned the projector lens they were pretty dirty. Still image clear but yellowish.
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Posted on Jan 02, 2017
This looks like bad convergance. If only one color is affected it may be one of the convergance IC's. It is best to replace both IC's though. If you change the IC's then check the resistors next to the IC's. Use the exact part numbers. STK392-110 IC's can be upgraded to a STK392-180 for better heat strength. (That is why they blow, too much heat generated. Use a liberal amount of Silicone Heat sink compound.) A shorted IC will usually blow a resistor. If a bad resistor that isn't changed it will look like the new chip is bad. Make sure that you use the same wattage and the exact value (Ohms). Your convergance will not be right with an off value resistor. This info works for about any other brand Projo TV. Cheers, Lee http://www.crazycomputers.com
Posted on Jul 28, 2007
SOURCE: yellowish tint on all channels
Hi, bad news guys, from your brief description you have a bad light engine, you both need to have a tech verify this but thats most likely what is causing your symptom. This is NOT a layperson repair, you`ll need a tech, BMW Rider
Posted on Dec 12, 2007
SOURCE: tv discoloration
I had whole redish/pinkish screen on my 50v500 starting a few days ago, then I read through each of the threads on this site for the samilar problems on my model. I found TVtechmaniac's solution (pasted below) solved my problem. Thank you TVtechmaniac!
Enter the I2C Service Menu, be sure the power is OFF.
1. On the front control panel, press and hold the INPUT button.
2. Then press the POWER button for two seconds.
3. You may keep the INPUT button depressed until you see the OSD with the Service Menu displayed.
4. If you don't see the service menu, please repeat Process making sure you wait until the Power blinking LED stops.
5. Execute the Memory Initialize operation after the adjustment values have been written on a sheet of paper. Highlight “MEMORY INTI”, arrow to the right and hold the button to the right (approx 5 sec.) until a check mark appears in the box. This activates the Memory Initialization.
6. After the Memory initialize operation has finished (10~15 sec, the channel will revert to CH 3.) the pink image symptom should be fixed.
7. Write back the adjustment values from your notes to their respective adjustment parameters in the adjustment mode. (In other words, set the Data Values back to the the Data values written down before the Memory Initialization procedure). NOTE: Make sure the SELECT Button is pressed on remote after every change to the values. Failure to do so will result in the data values not being changed.
8. Exit I2C menu. Press exit repeatedly until you go back to the normal picture.
9. Turn the set off-on and Confirm the picture remains in a good condition.
BE SURE TO COPY DOWN DATA SETTINGS BEFORE INITIALIZING I2C SETTINGS
Posted on Aug 31, 2008
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