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Help! Sanyo CP21SA1 TV showing white screen

Discussion in 'Electronic Repair' started by cbvgn, Feb 28, 2007.

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  1. cbvgn

    cbvgn Guest

    My Sanyo CP21SA1 TV is showing only a white screen. I can hear the audio fine,
    but can't see a picture and can't change the channels using the remote or
    manually. What is happening!?

    I have seen other people on forums on the Internet with a similar problem and
    it seems relatively easy to fix, but in their case the TV switches off after
    a few seconds. Mine doesn't, it just stays white until I switch it off. Does
    that mean it is something else?

    Can I fix this? I don't have much electronics experience, and have never
    fixed any TV, so some basic instructions would be good.

    I would be so grateful for any help anyone can offer.

    Thanks in advance
  2. Franc Zabkar

    Franc Zabkar Guest

    I'd try both the AV inputs and the RF input. Does the OSD (on screen
    display) work, ie do you see anything when muting the audio, or when
    changing the colour, brightness, contrast, etc? If not, then I'd
    suspect that the jungle IC (LA76818A) may have problems. Check its
    supply pins (eg RGB VCC, pin 18).

    - Franc Zabkar
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