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Old 8th July 2010, 03:02 PM   #1
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Default help sony cdx-c7850

hey
Am working on a sony cdx-c7850 player and it has no output and the display screen is a bit dark.i replace the output ic and resolder some cold joints but stil the same.do any body have any idea what could cause that

thanks in advance
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Old 8th July 2010, 05:28 PM   #2
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Location: Louisiana
Is thew backlight dim for the display or is it completely unlit?

Email me if you want the service manual.

babin_perry@yahoo.com
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Old 8th July 2010, 05:52 PM   #3
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the backlight is completrly unlit
i can see the primary digits like station numbers and volume etc
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Old 8th July 2010, 06:03 PM   #4
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Location: Louisiana
I sent the manual. The EL backlight display power supply power source (8v regulator) is on page 60. Check the voltages there first.
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Old 20th February 2011, 01:57 PM   #5
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Quote:
Originally Posted by ian33 View Post
hey
Am working on a sony cdx-c7850 player and it has no output and the display screen is a bit dark.i replace the output ic and resolder some cold joints but stil the same.do any body have any idea what could cause that

thanks in advance

i am in desperite need of the wiring diagram for that radio. do you still have it and if you do, can you please send me a list of the wires to my email. ive been looking for a hour already and havent been able to find it online. crazy06076@yahoo.com
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Old 21st February 2011, 12:10 AM   #6
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ok i will
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Old 8th January 2013, 05:13 AM   #7
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Join Date: Apr 2010
Default Service manual

Quote:
Originally Posted by ian33 View Post
hey
Am working on a sony cdx-c7850 player and it has no output and the display screen is a bit dark.i replace the output ic and resolder some cold joints but stil the same.do any body have any idea what could cause that

thanks in advance
Hi, I have the same problem with the dim LCD. Is there any way I can get a copy the service manual? Email address is thomcao@gmail.com.

Thanks in advance,

T.
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