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From: Bojangleslovin on 17 Apr 2005 20:11
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
From: mark on 18 Apr 2005 02:33
The manual will tell you how to adjust it, and if it doesn't the problem
is in that part of the circuitry.


"Bojangleslovin" <bmbouterNOSPAM(a)ncsu.edu> wrote in message
news:MWC8e.11416$44.6220(a)newsread1.news.atl.earthlink.net...
> 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


From: Art on 18 Apr 2005 05:40
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.
"mark" <bk416(a)lafn.org> wrote in message news:d3vkak$pih$1(a)zook.lafn.org...
> The manual will tell you how to adjust it, and if it doesn't the
> problem
> is in that part of the circuitry.
>
>
> "Bojangleslovin" <bmbouterNOSPAM(a)ncsu.edu> wrote in message
> news:MWC8e.11416$44.6220(a)newsread1.news.atl.earthlink.net...
>> 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
>
>


From: Bojangleslovin on 19 Apr 2005 11:00
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!

Art wrote:
> 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.
> "mark" <bk416(a)lafn.org> wrote in message news:d3vkak$pih$1(a)zook.lafn.org...
>
>> The manual will tell you how to adjust it, and if it doesn't the
>>problem
>>is in that part of the circuitry.
>>
>>
>>"Bojangleslovin" <bmbouterNOSPAM(a)ncsu.edu> wrote in message
>>news:MWC8e.11416$44.6220(a)newsread1.news.atl.earthlink.net...
>>
>>>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
>>
>>
>
>
From: Art on 19 Apr 2005 17:24
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.
"Bojangleslovin" <bmbouterNOSPAM(a)ncsu.edu> wrote in message
news:H299e.12278$44.4935(a)newsread1.news.atl.earthlink.net...
> Thanx for all the help so far! Just wondering but what is a CPT? What if
> I find leakage? I've ordered the service manual!
>
> Art wrote:
>> Check for leakage from any one of the three cpt before going too far,
>> then order the convergence output board, After replacing that item then
>> do the required adjustments.
>> "mark" <bk416(a)lafn.org> wrote in message
>> news:d3vkak$pih$1(a)zook.lafn.org...
>>
>>> The manual will tell you how to adjust it, and if it doesn't the
>>> problem
>>>is in that part of the circuitry.
>>>
>>>
>>>"Bojangleslovin" <bmbouterNOSPAM(a)ncsu.edu> wrote in message
>>>news:MWC8e.11416$44.6220(a)newsread1.news.atl.earthlink.net...
>>>
>>>>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
>>>
>>>
>>

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