20 Most Recent Hitachi 50VF820 Projection TV - Page 2 Questions & Answers

I had a similar problem with my 42 in Philips LCD HDTV.

Here was the problem. My Power Supply Board had several bad capacitors. I opened my TV (warranty was expired of course) and found four bulged capacitors on the PSB. Many major electronics companies Philips/Magnavox, Sony, Panasonic, and others were sold capacitors that failed in 2-5 years instead of 10-20. The capacitors fail prematurely due to a lack of preservatives. Unfortunately, they were installed in all sorts of devices and cause a wide range of failure problems.

Here are some options for you.

1. Have it fixed by a professional $$$$$$$??????? (Is it under warranty?)

2. Open your TV and find PSB. (The board that the power cord plugs into) Check for faulty caps. If you find some (bulged or leaking) bad caps replace the entire board. The entire board costs around $250 right now because they are in high demand right now. They can be found at tv-part.com but supplies are limited. I would definitely shop around though.

3. Remove and then replace individual faulty caps. This takes some soldering skill.

Caps are inexpensive and if you can take care of it yourself it will save you hundreds.

This may be your problem. If you determine that it might be.

I have a Tip/How TO tutorial on this site that may also help. It gives step by step instructions for replacing caps on PSB #715t2432-2. If this is your board you are in luck. Here is the Link: Fixing the Philips Turns/shuts off on its own problem. I'm working on uploading pictures to help guide people though the process as well. Let me know if I can do anything to help.

Hope this helps and if it does please rate it accordingly. Good luck.

Remove the lamp cartridge and make sure the wiring is secure, if ok then reinstall, slowly and carefully making sure the lamp is seated correctly, do all this while the tv is unplugged - of course, also make sure the all the covers on the tv are securely installed or the tv will not power up. good luck

The electrolytic capacitors have aged and there is a much bigger current passing thru them , overstressing the power source an triggering the protection system which shuts the tv off , which cuts the current thru the capacitors, which makes the protection system inactive, which allows the power source to start again a new power - shutdown cycle.
Only when the capacitors heat up from all that current that has passed thru then their internal resistance approaches the normal level so the current drops to tolerable levels allowing the power source to remain on.
Replace all capacitors immediately , or one will fail for good and fry a lot more.

http://www.google.com/products?q=50VF820+lamp&oe=utf-8&rls=org.mozilla:en-US:official&client=firefox-a&um=1&ie=UTF-8&ei=Mx8hTLyHNIHB8gb089CTAg&sa=X&oi=product_result_group&ct=title&resnum=3&ved=0CDsQrQQwAg
lamp can be found for about a 100$. That is what you need.
Thank you,
Lee

Sounds like your cooling fan might be out. If you can turn the set on after it has sat off for a while and get a picture then your fan needs to be replaced. If you cant get anything at all its time for a new bulb, you will also want to clean the cavity the bulb goes into and remove all lint, check the fan. Good luck

go into menu...try to increase brightness

yes you need a lamp about as sure as anyone can be without looking take lamp out see if its brke inside or has any whit smoke spots in it

The front will pop off for you on the bottom they schould have this in the owners manuel for you good luck

Did you make sure all doors and screws are back in unit biggest mistake is not putting door back on mechanism that wont let lamp light without it on please start here

You need a engine well you need a color weel but they dont let you just change that you have to change the whole light engine runs from 800-1500 depending what model and were you get it some places you can send it to get rebuilt for 300-400 but it takes about 2 weeks

Hi , it seems you are experimenting a light engine problem.Here's how your tv works: http://www.youtube.com/watch?v=ZLLHnQ4y-wo Basically there's 3 LCD chips that create the colors and image by blending together.When these chips start to melt you will get those blue spots, pixilation even vertical lines.You will need to replace the light engine. Have a blessed one!

The light engine will need to be replaced.

CK Lamp Fan and Ballast Board It is what Powers Lamp ON. If Lamp Fan is defective Lamp will not come on and if Fan is OK then it will be Ballast Board. Call Encompass Parts for Parts to your set 1-800-638-3328

Your unit has some sort of PSU fault, or a problem that is shutting down the Power Supply Unit, PSU. This happens so that no further damage, and possible fire will occur. The sound is it starting up, shutting down, over and over.

You need to take the unit to a reputable service centre/man and ask for a firm "Quote" for the work to be done.

check power specification or power pack

move your set away from a moisture area or reduce your A/C level.

Check your Stablelizer if it still goes off then check the timer 

Go to menu select Auto or BK.