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SONY KDL-50R550A 60R520A 60R550A 70R550A CHASSIS RB1FK VER.3.0 SEGM.BL RM

TV - SERVICE MANUAL
Type: (PDF)
Size
8.9 MB
Page
33
Category
TV
SERVICE MANUAL
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SONY KDL-50R550A 60R520A 60R550A 70R550A CHASSIS RB1FK VER.3.0 SEGM.BL RM service manual (1st page)
Preview of SONY KDL-50R550A 60R520A 60R550A 70R550A CHASSIS RB1FK VER.3.0 SEGM.BL RM [1st page]
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SONY KDL-50R550A 60R520A 60R550A 70R550A CHASSIS RB1FK VER.3.0 SEGM.BL RM service manual (2nd page)
Preview of SONY KDL-50R550A 60R520A 60R550A 70R550A CHASSIS RB1FK VER.3.0 SEGM.BL RM [2nd page]
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  • Also known:
    SONY CHASSIS RB-1FK RM KDL50R550A 60R520A 60R550A 70R550A RB1FK SEGM.BL KDL 50 550 60 520 70 RB FK 50R550A
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  • See related repair forum topics below. May be help you to repair.
Warning!
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Relevant TV forum topics:
Sony KDL-37EX402 the TV in dead, no LED, motherboard problem.
Hello

The TV does not show any sign of life , I started the troubleshoot as this , no power Led, no reaction when pressing the power button.

I checked the Power coming out from the power supply, the 3.3V_standby is correct and steady, then I checked the 1.2V_standby produced by IC6001 which Is good as well.

So I decided to control the main IC , IC4000 , he does not output any oscillation on the Xtal, Then I am now bloacked there.

The schematic is downloadable on this  website , the schema is weird because the processor is not represented with any Xtal output, but obviously it has one.

Thanks you for your hint and help.
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