Hitachi 53FDX20B 53" Rear Projection Television - Answered Questions & Fixed issues
CAN AND HOW DO I MANUALLY FOCUS
Before you try anything you should check if there is any dirt between the CRT tubes and the lense. First try cleaning them. If that doesn't work you will need to open the back cover. (Be very careful because there are some very high voltages like over 25,000 volts present from the flyback transformer and the CRT's. If you feel comfortable and you know exactly what your doing then there should be two adjustable controls probably on the back of the flyback transformer. One should be the screen voltage control and the other should be the focus control. Whils using a mirror very slowly try to adjust the focus control. It may have a sealed shaft that will need to be broken while you turn that control but don't worry it will free itself with just a small amount of pressure. You must remember what I said about those high voltages and it your not sure about what your doing then you need to call in a qualfied service technician,
How do i set my setting so i can get a picture
settings on this model will not become erased, it has a rom memory----try unplugging set and after a while plug it back to see if it reboots.Also a better description of what set is doing or not would help.
Hitachi > 53FDX20B blurry picture
I would start 1st by checking all resistors ie.
RK43 2.2 ohm - 2W
RK47 1.5 ohm - 2W
RK51 2.2 ohm - 2W
RK55 1.5 ohm - 2W
RK59 2.2 ohm - 2W
RK63 1.5 ohm - 2W
If I were you I would also replace the convergence chips. From the above thread it's clear that they are of different quality so they may last different lengths of time (B&D is a good place to buy good quality ones).
I found a free pdf service manual for 53FDX20B on a Polish web site: http://instrukcje.elektroda.net/main1750.html
other models try here: http://www.webtronix.ca/hitachi/index.htm
Download pictures from my repair (Password: delirious).
No audio on my dvd outputs on my 53fdx20b
If you GOOGLE the model number with "problems" or "audio" you will see this set is prone to problems of this kind.All audio is routed via one special circuit board and they had all kinds of soldering problems.Where I work we will not bother to spend 4 hours plus and use expensive soldering station to re-solder all the flat pack chips on the board.Last I heard board no longer available and if someone wants it fixed we remove the board (easy) and send it to PTS Electronics for rebuild.Last time we did that it was about 200 but price may be different now.
Need a convergence board for the tv and is it
You need to determine if the set had a good picture before the convergence problem began. In other words is the picture bright enough and did it have good color. Most rear projection sets this day and time are all usually having their CRT's to be weak due to age. This type of rear projection set is being no longer made. However, if the picture was good then you will have to change the convergence IC's and maybe a resistor. This set takes two STK392-110 but is recommended to replace with STK392-150. These chips have to be unsoldered and soldered new one in. Each has 18 pins soldered to the board. You must have good soldering and unsoldering experience to do this. Sometimes a resistor will be open in the circuit as well and must be replaced. Part number for the digital convergence board is CS00452 and my supplier Encompass mentions it but none in stock for $250.90. It is likely you will NOT find the board.
Hitachi 53fdx20b has yellow line on top and bottom
It sounds like a convergence problem and is typical for many projection sets.Parts cost would be under 25 dollars.The repair consists of getting at and replacing two convergence chips and being able to solder is also involved as they have 18 pins each chip.Let me know your skill level and I would be happy to help.
The color convergence seems to be not working at
Convergence problems are almost always traced back to the IC chips (also commonly referred to guns). You can order a new board (very pricey) or if you are pretty good with a soldering iron, it's possible to remove the IC's (if you choose to do it yourself, best to replace all 3 IC' s at once). The guns are usually in the $10-20 range apiece whereas the convergence board can run in the $300 range.
AFTER CLEANING BOTH THE MIRROR AND THE THREE
Picture are blurry and have a hollow effect?But Convergence pictures R,G,B colors lines are all alignments up?Need CRT coolant replacement for the green CRT TUBE gun.Tries websites like Tvrepairworld.com,Tvrepairkits.com to buy a CRT coolant kit for the replacement.
Blue will not focus causing "shadows". Magic focus
This tv have a problems call convergence,it dead.The tv convergence board the 2 STK convergence ICS and some or all it resistors are dead.These parts must be replaced to solved convergence problems.The shop will cost u $300-350 for parts and labors.
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