Hitachi 60SX3B V4HAug 94
My wife and I have noticed, over the past couple of months, that many received programs have become much darker than before....for instance, in low light situations (as with the characters being in rooms as opposed to outdoors) any character or item in shadowed areas are almost totally blacked out. Does it corelate to a differing signal now be broadcast for HD? Really puzzling and irritating as some shows are almost non-viewable at times. Wondering if there is a way to brighten the projection. there is no halowing, converging problems, etc. When not too dark the picture is crisp and enjoyable.
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Re: Darkening screen (or of programs?)
Use the advanced options page and reset the factor blue and red convergence defaults then do re apply the auto color defaults color at first it seemed very red (which is good because red was the missing factor in the green picture) but after reseting all the color and tints to the normal ranges I then reset the color auto correct again and all seems fine.
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Many people have problems determining if their monitor is bad or their video card is bad. One good way to test this is by swapping out your monitor with a friend, co-worker, or family member with a known good monitor. You can do this with either your computer tower or your monitor. Follow the two steps below: 1. Take your computer tower and plug it up to a known good monitor. If the computer boots up with no problems and you are able to see everything on the known good monitor, then your monitor is bad. 2. Take a known good monitor and plug in to your computer system. If the computer boots up and you are still having problems and getting a black screen or some message saying "no signal" then your are having problems with your video card.
Some common symptoms of a monitor going bad are as follows: 1. A humming or buzzing noise coming from your monitor. 2. Picture fades in and out. 3. Colors appear in various places on your monitor screen that normally would not be there. Most common colors presented are red, green, or a mixture of the two. 4. Picture presenting either light or dark and will not change no matter how much you change the color or tint setting. 5. Lines appearing on the monitor screen. These will look like the lines on a bad television. 6. Monitor takes longer than normal to present picture. This time can vary depending on how old your monitor is and how far into the malfunction phase it is.
Since your monitor works off the same principles as your television set, most the time it will present with the same symptoms as a television going bad. I hope this helps in your troubleshooting process to determine if your video card or your monitor is the one causing the problems. These symptoms apply to the regular monitor only and not necessarily an LCD monitor.
Sounds like your convergence modules have gone bad. They have 21 close spaced pins to unsolder and resolder. You'll need a soldering iron with a fine point tip and thin gauge solder to do the repairs yourself. Solder bridges between pins are common when soldering these module pins, so have some unsoldering wick handy if you're going to fix it yourself. You can get parts from here: TV Parts Universal TV Stands DLP Chips ShopJimmy
If you have read many of the posts, you would have known not to buy Hitachi Telivisions or like me avoid all Hitachi products. There help line is not very useful, they just blow you off. I have never had a worse experience with other manufacturers. Take Onkyo for instance, they had a problem with a chip in their THX receiver and it was a year later ... I called their help line they located a repair store about 40 miles from where I live (in Texas that is not very long) and got my receiver fixed and this was 8 years ago.
Also use Consumer Reports to check the frequency of repair record for the product you are going to buy. In Plasma - Panasonic is a safe brand, in LCD's Sony or Samsung have good repair records.
Research the product before you buy it, avoid walking into a store have the salesperson direct you to a product. And then you save money if you order it online. Amazon online is very good.