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Crumbtrail TV Forums: TV Equipment: Projection TV Forum:
samsung hc-p4741w

 
 


roots 050
New User


Sep 20, 2007, 6:12 PM

Post #1 of 8 (13034 views)
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samsung hc-p4741w Can't Post
hi there i bought that broken samsung projection tv model hc-4741w for about 100$ now .
-It had a defective power switch (on/off button in front of tv) that i remove myself and it made it work properly (sometime it just didnt want to turn on). that is fine with me
-there a line in the middle of the screen it looks like a line made with a paint brush : after openning the cover i realize it has that same line on top of the blue projector. i open it thinkin it was only like a dust or something (Piratebut i realize theres liquid in that tubePirate). so i guess i have to change the whole tube ? and now it doesnt want to turn on it just does the sound eeeeeeeeeeeee for 2 sec than the red light in front start flashing.
if you guys can help just do it ! lol



brooker32
New User

Sep 22, 2007, 11:08 AM

Post #2 of 8 (13003 views)
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Re: [roots 050] samsung hc-p4741w [In reply to] Can't Post
The line is most likely caused by bad coolant. If you remove the blue lense (4 screws) to take a closer look...it's suppose to be clear, but if its like my hcp4241 was it was dirty and crudded up. I had to replace the coolant fluid in each crt. You can order the fluid and do it yourself. As for the no power problem....maybe convergence IC's? If you look at the post here you may get a tip on how to check if they are bad by disconnected power going to them.


roots 050
New User


Sep 24, 2007, 5:47 PM

Post #3 of 8 (12994 views)
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Re: [brooker32] samsung hc-p4741w [In reply to] Can't Post
when i open that lense, the cooling liquid came out and felt on the board Mad is this bad ?
onfortunately the tv was not connected do you think annything could have happen
and how do i take out that lense without spilling this liquid


brooker32
New User

Sep 25, 2007, 1:54 PM

Post #4 of 8 (12987 views)
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Re: [roots 050] samsung hc-p4741w [In reply to] Can't Post
You removed the wrong part. Coolant on boards they say is very bad....very conductive. The lense sits on top of the part you removed. Thats why you should always read as much as you can to make sure you are doing the right thing. There are posts here on how you can try and clean that board, it may or may not work. I am sorry you have done this but I had hoped you would have read more before jumping into reparing it. Was it a lot of coolant? If its not a lot you may be able to clean it up.


roots 050
New User


Sep 25, 2007, 10:37 PM

Post #5 of 8 (12981 views)
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Re: [brooker32] samsung hc-p4741w [In reply to] Can't Post
my bad ive should have know, i came in this forum after it happen,
i just tought it was dust in between lenses. i didnt even know there was fluid in there.
now lets just hope it didnt break trough the board. maybe as much as a shooter drop on it.
do you think its really dangerous for the board
and you dont have any pic on how to remove the projectors


brooker32
New User

Sep 26, 2007, 12:32 AM

Post #6 of 8 (12976 views)
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Re: [roots 050] samsung hc-p4741w [In reply to] Can't Post
Do you mean the whole crt? I did not remove mine all the way. About halfway...by disconnecting almost all the connectors. Look at the post here on replacing crt coolant and you will get more guidance and some different pics.


roots 050
New User


Sep 26, 2007, 4:39 AM

Post #7 of 8 (12974 views)
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Re: [brooker32] samsung hc-p4741w [In reply to] Can't Post
most of the pict if see is just before and after
ive found a pdf on how 2 do it but pic would be nice
and yes the whole unit (one color projector) at the time
i know most people succeded but im afraid for more fluid 2 drop on my board
Unimpressed
nobody had that --eeeeeeeeee-- noise trying 2 turn on your tv but it wont turn on


roots 050
New User


Sep 27, 2007, 5:35 PM

Post #8 of 8 (12957 views)
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Re: [roots 050] samsung hc-p4741w [In reply to] Can't Post
ive found this on samsungparts.com
Part Number: BP94-01289A
Description: ASSY PCB MISC-PWR DEF/SUB PCB IN S/M
Stock Availability: Item usually ships in 5 business days
Price: $167.35 Specification

WITH CONV IC'S DP, HCP4241W5S,P60

Support Models

HCP4741W, Other TV, PT5499HD
ASSY PCB MISC-PWR DEF and also at partstore.com Samsung Part Number: BP9401289A (but its a replacement part)

Price: $137.42
but how can i know if this is my problem, the tv doesnt turn on no more ?

 
 
 


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