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TV Repair II - Guidance Needed

R

Reactor

Jan 1, 1970
0
Hi,

A few weeks ago, I posted about my 12 year old RCA TV that started giving me
snowy pix. The consensus was that I am suffering from the common issue of
poor factor soldering on the CTC175 main board.

I have the TV gutted and need to get the tuner covers off. I am told the
top one just pops off, but I need to get the bottom one off. I can't tell
where I need to desolder to remove the bottom cover.

I know there are four points that need desoldering, and there are four
circular blobs of solder in the middle of the tuner cover.

Are these the areas that I need to desolder, or are the ones I need
somewhere around the perimeter of the cover, and do they attach the cover to
the PCB?

Thanks in advace!!
 
S

Sam Goldwasser

Jan 1, 1970
0
Reactor said:
Hi,

A few weeks ago, I posted about my 12 year old RCA TV that started giving me
snowy pix. The consensus was that I am suffering from the common issue of
poor factor soldering on the CTC175 main board.

I have the TV gutted and need to get the tuner covers off. I am told the
top one just pops off, but I need to get the bottom one off. I can't tell
where I need to desolder to remove the bottom cover.

I know there are four points that need desoldering, and there are four
circular blobs of solder in the middle of the tuner cover.

Are these the areas that I need to desolder, or are the ones I need
somewhere around the perimeter of the cover, and do they attach the cover to
the PCB?

Perhaps:

http://www.repairfaq.org/sam/rcatune.htm#rcadet

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A

AJ

Jan 1, 1970
0
Highly suggest offing this one to a repair facility that had done RCA OBT
Tuner Repairs. Unless you just want to experiment with it. Looking at the
bottom tuner cover it is obvious where the shield is soldered on, however,
once you get that off you still will be completely in the dark as to what
you may need to solder. Again, suggest having it done for you if you want a
functional set afterwards.
 
C

Charlie East

Jan 1, 1970
0
The 4 globs in the middle of the cover has to be unsoldered. I get all I can
with a solder sucker, Then very carefully lift one side with a small
screwdriver while heating the points, After the cover is removed, inspect
the solder with a magnifing glass, usuall the big ones need soldered.Take a
good look at the point to make sure what is connected in case of a
bridge.Also be careful not to loosen and lose any surface mount components
around the point you are resoldering, Also sometimes the input connector
needs resoldering, be careful not to use too much solder around the edge or
you might have trouble getting the covers back on.
Hope this helps
Charlie
 
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