Top 20 Hitachi 50V500 50 in. HD-Ready LCD Television Questions & Answers


No the switch if working fine. It is a momentary contact switch. Check the air vents all around the tv, Vacuum the vents if possible so air can circulate. Next there is a protection circuit built in to the system called to power on self test. if test results are ok the tv will go on. If not the tv may go on but flicker on or off and then no tv.
The power supply board is notorious for failing that way. Some can be replaced most have to be repaired to the component level. Try the Vacuum first before opening it up cause it is a lot of work on the dining room table, There is a small power relay that is located on the power board which actually controls the main A.C. to the whole set. I have seen them intermittent before causing that problem but it has to be soldered in place and a lot of electronic components can be destroyed by just you touching it. Be careful, Good Luck, Bill

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If you wish to get some details; visit the site linked here. Pull up older posts.
http://electronicshelponline.blogspot.com/
Lamp replacement procedure to projection TVs are given.

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Try cleaning the 11 element lens just in front of the lamp housing. If this doesn't completely clear the problem, then one or more LCD panels are faulty.

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It is not available anywhere now.

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Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. It will be best to replace the inverter board as card basis. http://electronicshelponline.blogspot.com/ To some model sets; especially LED back-lighted types; the back-light inverter circuit will be part of the main power supply board [SMPS]. In such cases, the power supply board might need replacement. To some models sets, the back-light inverter and SMPS section circuit will be integrated at its main board itself. If so; the main board should be replaced. To some models of sets, all these section circuit will be integrated at its main board. If this is the case, you have to replace the main board.

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These blinks [flashes] are fault indication (Error Codes). From the number of blinks occur at one time switch ON, you can get an idea about the faulty circuit section inside it. This will make repair easy. These are called blinking codes. Make sure about the exact number of blinking of the standby/power LED, by switching On & OFF the set, for at least two times. Count it carefully. If you wish to get some details, check the site linked here. It has details about blinking codes, and fault locating procedure, to many popular brand TVs and other devices.
http://electronicshelponline.blogspot.com/
If blinks continue without any pause, the main board is faulty.
Search the site by type in the "brand name" to your device, in the "Search box at the top right of the display window of the Homepage" to get gathered related posts.

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If you wish to get some details then check the following link
http://electro-medical.blogspot.com/

Hitachi 50V500... | 42 views | 0 helpful votes


These blinks [flashes] are fault indication (Error Codes). From the number of blinks occur at one time switch ON, you can get an idea about the faulty circuit section inside it. This will make repair easy. These are called blinking codes. Make sure about the exact number of blinking of the standby/power LED, by switching On & OFF the set, for at least two times. Count it carefully. If you wish to get some details, check the site linked here. It has details about blinking codes, and fault locating procedure, to many popular brand TVs and other devices.
http://electronicshelponline.blogspot.com/
http://electro-medical.blogspot.com/
If blinks continue without any pause, the main board is faulty.
Search the site by type in the "brand name" to your device, in the "Search box at the top right of the display window of the Homepage" to get gathered related posts.

Hitachi 50V500... | 48 views | 0 helpful votes


If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience.
http://electro-medical.blogspot.com/
http://electronicshelponline.blogspot.com/

Hitachi 50V500... | 43 views | 0 helpful votes


It sounds as if your optical lens are out of alignment on your tv..

Hitachi 50V500... | 69 views | 1 helpful votes


If it is a rear projection TV then I would look to the IC's that control the Red or Hue in the color circuits. Depending on the year, make and model some have some adjustments. If it is a rear projection
unplug it for a night and day and get back there to each one of the picture tubes and feel around and you will a soft thing sort of like the primer on a weed eater. Press and release it several times. This agitates the electrolyte behind the tubes and could possibly cause a color problem. If you have a newer model of the flat type then I don't really know, possibly the main board. I honestly have never ran into screen off color in the newer flat TV's. Sorry I can't be of more help. If it is a pretty new TV I would call the mfg and ask for one of their techs. He is suppose to help even if it is out of warranty.
Col. Dana Gillespie

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Maybe you need to unplug the t.v. for a few hours and then reset the t.v. if that doesn't help maybe you should purchase another t.v .there are thrift shops that sell different makes and models of tv's for dirt cheap.

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If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/
Lamp replacing procedure to projection TVs are given in detail with illustrations.

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please give complete details

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If there is a socket at its back marked as HDMI, the set should have capability to receive HDMI signals, provided the HDMI firmware has been installed to it successfully. You can connect it with an HDMI cable, with any other external equipment having HDMI output, and select the TVs' input to HDMI.
Electro help

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Fault with the main power supply regulator board. Check and replace damaged component/s at its main power regulator [SMPS] section circuit. Contact any service technician. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts.
http://electronicshelponline.blogspot.com/
It will be best to replace the power supply regulator board as card basis rather than making "Surgery" to it; which usually will make loss for both money and precious time.

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I ran into Bee Hive of problems and don't know where to start. I have read problems that are related to the convergence , one definitely a fan motor. A couple sounded like the color IC on the CRT board. Some sound like bad caps in the power section. Some sounded like a picture tube alignment problem. The one that wouldn't turn off sounds like a relay stuck or burned closed. As I read down I noticed some problems that would have to be done in a well equipped shop.. I really don't know where to start. If someone will give me a specific problem I will try to solve it. Reading down I got confused, is this all one TV?

Col. Dana Gillespie

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On the main power board inside the TV there are fuses take a look at them and the transformer and capacitors for damage

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Sorry but NO! The bulb provides a back light for the screen and has nothing to do with the color. No green color can be caused by many things, but the most common problem with all of them is either a Green tube gone out or the IC that drives the color is bad. Both of which are major repairs. However, lets make sure - get you a wooden dial (stick) about 3/8" in Dia. and a foot long and while it's playing poke around on the boards. Sometimes bad connections can also cause a color to go out. If you press on a board and the green returns then you probably have a cold solder joint. Then you will want to take that board out and go over all major solder joints with a solder gun and some solder. Also the IC that I talked about will either be on the board that attaches to the rear of the tube or on the board right where the wires of the green tube comes down, there will be one for each tube. It is a small square component and if you know anything about transistors it is in a to-220 case and has 5 leads coming out of it. Check it and see if it is hot, but be careful, when I say hot I mean burn your finger bad before you can turn it loose.If it is hot then that is it, you can try to find one on the internet. Try "alldatasheets.com" if anyone will have one they will. Also if you know where there is a TV that someone has junked you can rob one off it. The best I remember the R G B all have the same IC. You could try replacing it and again sometimes that will solve the problem. Usually when I fixed one thing on that type TV something else went out. You asked if replacing the back light would help. If the back light is out you may have a bad ballast as well. Again I don't know where to get one but I know they are expensive. The rear projection TV is one of the most complicated piece of electronic equipment I have ever seen in my 33 years of working in Electronics. That's why I went to such length to answer your question when NO is the answer. You may be able to get it back by trying some of the things I mentioned and get it going again. The above mentions procedures are what I would try if it were in my shop. If I can be of further assistance please feel free to contact me.
Col. Dana Gillespie

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