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Re: rf jack
You need an 800 degree soldering iron. It is advisable to tke this to a repair shop. A qualified echnician may bae able to repair the turner without further damaing. It is likely if you try to do this yourself the tuner will be damaged to the pint that it will have to be replaced which will mor than double your repair cost.
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A RF amp can only work with the signal it is supplied---and a loose connection could affect only the lower channels---common.
Faint but possible is tuner in set has a problem (2-6 or low band)
Another idea is if you have a/v jacks on the back of the set route the signal into a old vcr and out from its rear AV jacks into the matching in jacks on the set--bypass the TV tuner to see if the tuner in the set is the issue or what....
guess u mean the antenna in or also called rf. in this case if u are involved in electronics and have a soldering iron u can open the rf converter and solder a rf cable inside and leave it out the original hole and connect a simple plug for connecting to antenna. just ask again here to topic if something is unclear.
As long as the tuner that the connector plugs into is not bad/broken then you can re-attach the connector by soldering it to the casing
file or sand both surfaces before soldering and attach a cable to the connector to help dissipate heat while soldering(so the plastic center of connector is not melted) I some times use cold spray (a can of computer duster turned upsidedown) to cool the joint quickly, immeadiatly after soldering.
Good surface preperation and a hot soldering iron (45W or more) are key to doing a good job
The small metal box is the tuner. The tuner has to be removed to replace the broken off RF connector. The connector has to be soldered to the tuner housing (metal box) and the leg of the connector has to be soldered to the circuit board, board has to be checked for cracks or if it is broken. If board is damaged the tuner will have to be replaced, if its available.
You need to remove the tuner from the main circuit board, resolder the cable connector to the metal tuner case, and resolder the connection inside the tuner from the connector center tab to the tuner circuit board.
Removing the tuner requires "solder wick," a copper braid that soaks up the solder as it melts so it can be freed from the board.
Resoldering the connector to the tuner case requires high heat from a soldering gun to get it hot enough fast enough to make the connection. A regular soldering iron won't do the trick.
If the connector has been broken off completely, replacements are available from a couple of on-line vendors (I use a company call MCM Electronics www.mcminone.com.)
If you are not comfortable with electronic soldering and working on TV's, you might want to get an estimate from a shop for this repair. It should be under $100, depending on the shop's rate.
The RF jack is solder directly into the tuner module and as long as it
did not break the circuit board inside that it connects to, it can be
repaired . Takes a lot of heat though to solder the jack to the
frame of the tuner. Sometimes I use 2 irons to get it hot before
the plastic guts of the jack melt too bad. Also is sometimes hard
to cram the jack back into its mounting hole, may need to file it
out some. The makers don't solder these on they are just pressed
in and crimped which is why they break off so easily. I recommend
using the push on type cables to avoid this problem. Don't forget
to solder the center conductor into the tuner board.
Hope Ya Fix It!
first off how good are you with a solder iron ?
beside the obvious rf connector problem these set's had
problems with bad solder connections within the tuner itself.
google( sam goldwasser repair faq) for the solder template.
Its fixable. the question is how much of the inside broke with it.
cost for repair on that usually averages 45 to 65 dollars... unless tuner is damaged in most cases not. if not hooked to tuner then maybe a new isolation block..simple job