Any technician who is familiar with the GE TV tuner and mpu shield
connection problem please help. I am thinking about repairing this problem
myself. I fix telecommunication equipment for the Air Force and have been
to electronics and soldering schools. But, I don't know where to begin to
fix this common GE problem. I need some advice on whether I should try this
myself or have a television repair man do it for me. I should have all the
tools I would need. If not at home I would for sure have it at work. If
anyone knows how I could learn to fix this problem please let me know. Or
if it is simple enough to just explain through an email I would really
appriciate it. Or, if I shouldn't even try please let me know that too.
I have no picture started to turned red color and then now is black
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Re: Ge Television Repair
The repair for the tuner shield is quite simple but it might not fix it at this point.
1. Remove the back cover.
2. Remove the PCB from the where is attach to.
3. Remove the tuner's shield from the top and bottom side.
4. Locate the grounds from the shield and apply fresh solder.
5. Once the solder is done, install the shield cover back on.
The red colour before the TV went black could be related to a dry or crystallized solder at the CRT video amplifier board.
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Several things can cause a no-start condition. The EEPROM is my first concern. But before you even try to replace it you will have to resolder the Tuner on board. If you can pull the board out of this TV safely, do so. Where the RF connection is, this is the tuner. The tuner is built into the board, you cannot remove the tuner.Unsolder the bottom shield of the tuner. You will take the cover off and find about fifteen area to resolder. You must inspect very close to find these. The grounds that grasp the tuner cover will need resoldered, you can see where the solder is cracked. There will also be center pins in this area that will need resoldering as well. It will require lots of patience and skill to do this soldering. You do not want to burn the the PC traces as you will destroy this TV. After you rsolder and replace the tuner shield, then you may attempt to replace the EEPROM. The EEPROM location is U3201V. You will have to give me a Chassis number to find the correct EEPROM part. Other problems in the start up may be that the switch mode regulator will need resoldered. Location is U4101V.There are eleven pins to inspect. Also any radial capacitors in this are may be weak and may need replace. Please check these. I cannot remember for sure the values or location of these capacitors. I think one was 63 volt 10MF, this is known as the startup cap. Another cap was a 200 volt at about 2.2Mf. These are radial electrolytic capacitors. They are near the regulator I mentioned. Well these are very good leads for repair. I could go on and on.Seems complicated and, is if you have not worked on this model. You must have patience and skill to do this. My first concern would be to resolder the tuner. See what happens. Thanks for asking and show all hands of support.
Could be a problem with your Epprom chip, caused by the tuner shielding breaking free of the board because when the solder cracks it breaks circuit connection causing the Epprom to fail, if that is the case the tuner shielding most be resolded, and the Epprom replaced and programed.
The epprom chip is most likely the problem, the tuner shield will need to be resolded to the main circuit board because over time it developes hairline cracks causing the epprom to fail in a variety of ways. The chip needs to be replaced and programed along with tuner shield repair, I don't think there is a board option replacement.
The GE set is made by RCA and the tuners are built into the circuit board, the shield that is solded to the main board developes hair line cracks breaking circuit connections which in turn take out the epprom chip causing the set to shut down. The tuner shield needs to be resolded and epprom must be replaced and programed. I would recommend a service shop to do the work and get an estimate.
These sets are famous for tuner problems. They develop loose connections at certain ground points around the tuner shield and inside the tuner. When the set gets warmed up the solder starts expanding and causing your problem. This can be a tedious repair. You may want to have a shop check it out for you. Thanks for using fixya.
The chassis series used in that set was notorious for bad solder connections around its tuner and a few other places. (They used the tuner shield to provide a number of ground connections, and these cracked and went flaky.) These connections would cause a variety of problems including a set that won't turn on.
The fuse is located right near the AC mains cord connections on the board. You will probably find it's good. Not much went wrong on this chassis to blow that fuse unless it was power line troubles or shorted parts on the power supply primary side.
Check for 5 volts at one of the 3 pins on the the remote sensor. If the power is there, you probably have a bad EEPROM IC. Operating parameters and TV settings are stored in that chip, and the bad solder connections I mentioned above can lead to the data getting scrambled and a "dead" set. To repair this, you need to resolder the connections at the tuner shield and a few other locations, then replace the EEPROM.
If you Google "RCA tuner solder problems" or something similar, you should find all kinds of information about where to solder. The replacement EEPROMs are available from MCM (www.mcminone.com) and you order the appropriate IC for the chassis. I'm not home now, but when I get home later I'll check my files for the service bulletin RCA released, and look up the EEPROM you need in case that turns out to be the trouble.
Hello! Your tv has bad solder connections at the tuner and microprocessor or you have a bad eeprom IC...or both. The eeprom IC is to the tv what ram is to your computer...memory. The tuner's RF shield\ground connections and the microprocessor's RF shield connections must be soldered. If the solder job at the tuner/micro has already been done then replace the units eeprom IC and your set will work. Sounds like not an easy fix ,huh? It's actually very easy if you have any experience soldering. I did about 5 a week for 8 years or so. Every RCA\GE tv made between 1992 and 1996 needed to have their tuners and micro's shielding\grounds re-soldered. There was a class action lawsuit brought against RCA for this. If your unit made it this long without having this repair done it's amazing...the problem was cracks would appear in the solder ( cheap solder ). If your unit has had this service done...most had to be carried out when the sets were only 2 to 4 years old... then your sattelite technician recreated the problem just by unscrewing\screwing in the input cable to your set. He broke loose the solder connections again. If your unit has good solder on the tuner and micro then replacing the eeprom IC will get your unit exorcised!!! Good luck! Please rate my solution...Thank you!
These set are world famous for poor solder conection in there tuners, And since these tuners are part of the main board you have to remove the shiel and resolder them. A simple rule of thumb, resolder everthing in this shielded area
The GE (actually RCA) 31GT660 uses the CTC187 series chassis. This chassis is notorious for bad solder joints on the shields around the tuner and microprocessor. When the solder joints on the shields crack, the microprocessor and EPROM lose their ground and the EPROM's data becomes corrupt. The solder joints on the shields will all have to be resoldered and the EPROM reprogrammed or replaced by a qualified tech familiar with the 187 series chassis.