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TV w/ Convergence Problem

B

Bojangleslovin

Jan 1, 1970
0
I've got a Rear Projection Samsung HCM4215W who's blue gun is severely
warped. See photographs here:

<http://www.hardwooddesigns.com/forsale/convergence.htm>

I want to repair it (buying one is NOT an option). How can I determine
if the "blue" emmiter (gun) has failed or the circuitry behind it? Under
the TV's convergence setup, I can still make convergence modifications
to blue, which behave properly, but its basic warped shape may not be
modified. I found that samsung has a service manual for the TV that
costs $20, is this going to help me w/ both diagnosis and repair? Armed
with a soldering iron and multimeter, I await advice. Thanks in advance!

Brian
 
M

mark

Jan 1, 1970
0
The manual will tell you how to adjust it, and if it doesn't the problem
is in that part of the circuitry.
 
A

Art

Jan 1, 1970
0
Check for leakage from any one of the three cpt before going too far, then
order the convergence output board, After replacing that item then do the
required adjustments.
 
B

Bojangleslovin

Jan 1, 1970
0
Thanx for all the help so far! Just wondering but what is a CPT? What
if I find leakage? I've ordered the service manual!
 
A

Art

Jan 1, 1970
0
CPT Cathode Projection Tube, another anagram for Cathode Ray Tube specifying
it's application. If you indeed find evidence of leakage then you may just
ask Samsung to send you the circuit boar that has the fluid on it as well as
the three tubes, unless you can determine just which one has actually
leaked.
 
M

menkech

Jan 1, 1970
0
Brian,

I have the exact same TV with the exact same problem. Did you get it
fixed? What did you do? How much did it cost?

Thanks.
 
T

tom

Jan 1, 1970
0
You can swapt the blue and the red convergence connector yoke , the
problem will follow the red gun . It look like the convergence output of
blue gone.
 
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