mainboard replacement for LE37C650

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mainboard replacement for LE37C650

Postby benton » Thu Mar 28, 2013 12:12 pm

Hi all,
I have LE37C650L1WXXH with mainboard BN-94 02625J, LCD panel BN07-00829A T370HW03 VH AU37H3H and power supply BN44-00339B.
Problem - random restarts, resets, StandBy LED disappears and appears after random time not allowing to turn the TV on for some time - I replaced all the capacitors on PSU and tried the trick with resetting EEPROM - without success.
That's why I'd like to change the mainboard, but I can't find the exact one anywhere, so I'm looking for some decent replacement.
AFAIK - the same panel and PSU were used in LE37C630, but the MB was different (I don't know the part number). I've possibility to buy the LE37C630 with broken screen (unfortunately - I can't look inside it to check the parts' numbers, I can buy it online).

Therefore I've got three questions:
1) Should my tv (LE37C650) work with the MB taken from LE37C630 - without any other necessary changes? Are the other components (PCB's, inverters, etc.) the same in both devices?
2) Is it hard to replace the panel - in case when I have to put my LCD into the case of LE37C630?
3) Is there any proper replacement for MB BN-94 02625J so I can just put it into my tv? If so, could you provide some part numbers?

Thank's in advance.
benton
 
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Re: mainboard replacement for LE37C650

Postby Chees » Fri Mar 29, 2013 11:01 am

benton wrote:3) Is there any proper replacement for MB BN-94 02625J so I can just put it into my tv? If so, could you provide some part numbers?

Thank's in advance.


Spareparts can be found in here: http://www.sahy.cz/ and here: http://euroservice2000.abc24.pl/default.asp
On Ebay you can also find spareparts. Try searching on ´C650´ on both ebay and the websites. In the C-series Wiki you can also find a service manual with partnumbers listed.
The mainboard of a C650 32", 37", 40" etc. are all the same, it doesn´t matter which one you take. You should note down your current panel ID and tuner in your service menu. When you replace the mainboard, those ID´s needs to be the same in your new MB.
Chees
 
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Re: mainboard replacement for LE37C650

Postby juzis » Sat Mar 30, 2013 7:40 pm

Except 55` and higher.
LE40B653T5W,UE40D6750
Have questions? Read SamyGO Wiki, Search on forum first!
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Re: mainboard replacement for LE37C650

Postby benton » Tue Apr 02, 2013 1:13 pm

I had checked given e-shops with spare parts (as well as other sources) before and I found only MB BN94-02625V and BN94-03772Z that suits LE37C650, whereas my set has MB BN94-02625J originally.
What's the difference between -V and -J ending? Isnt't it related to the model/vendor of panel used in particular device?
On my local electronic forum someone wrote, that in C-series (on the basis of LE40C650) the following MB were used:
BN94-03454B
BN94-03454K
BN94-03454S
BN94-03454Y
BN94-03772U
BN94-04234A
Could anybody confirm this info?
Is it 100% safe to use one of the MB listed above instead of BN94-02625J? Is there any risk that something else may fail/brake down due to incompatibility (especially if the MB was designed to work with other panel than mine)?
benton
 
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Re: mainboard replacement for LE37C650

Postby Chees » Tue Apr 02, 2013 3:24 pm

I don´t believe the mainboard part number ending has anything to do with the panel type.
The same applies for the panel diameter, ie. it doesn´t mater if you use a mobo from a 32", 37", 40" or 46" TV (55" and above uses another mobo as juzis mentioned)

The model / panel type is listed in your service menu and can be changed. That´s why you need to write down your current panel type and make it the same in your new mobo.
For example, my panel type is: 40L1UF0C, where
40 = Diameter
L = Manufacturer -AUO AU Optronics Taiwan
1 = 100/120Hz
U = Ultra Clear
F = FullHD
0 = 1. Panel
C = CCFL back light

Other manufacturers are
A = AMLCD = active matrix liquid crystal display
D = CMO Chi Mei Optoelectronics Taiwan
L = AUO AU Optronics Taiwan
I = CPT CHUNGHWA PICTURE TUBES, LTD Taiwan

As far as I know only (but i´m not 100% sure) only the UK (+Scandinavia) and EU mobo´s are different due to the tuner type used.
Your TV model code can give you additional information, ie LE37C650 L1WXXN on your search for the right mobo.
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Re: mainboard replacement for LE37C650

Postby Kasha45102 » Sat Oct 26, 2013 4:56 am

Thanks for sharing.
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