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    Dwight Elvey

    It is unlikely the pots problem. It is more...

    It is unlikely the pots problem. It is more likely that the sync signal is no getting to the multivibrator. The fact that you are able to get the adjustment to bring the horizontal to the correct...

    Dwight Elvey Today, 03:54 AM Go to last post
    daver2

    I checked the online schematics and the ICs...

    I checked the online schematics and the ICs referenced (B14 and C11) are the types as specified.

    There must be at least two (2) revisions of the PCB then.

    Anyhow, three of the B14 gates and one...

    daver2 Today, 03:26 AM Go to last post
    Hugo Holden

    Yes, if its is rolling vertically on both...

    Yes, if its is rolling vertically on both monitors, and won't come into vertical lock, it suggests something has happened to the vertical sync pulse circuit on the motherboard.

    If you could post...

    Hugo Holden Today, 03:24 AM Go to last post
    Hugo Holden

    It might or it might not stay on. With the...

    It might or it might not stay on.

    With the current drain from the dummy load, this tends to store some energy in the the filter inductors and cause a small voltage drop from the smps transformer...

    Hugo Holden Today, 03:19 AM Go to last post
    Witchy

    Hi Hugo, Thanks for the reply but you didn't...

    Hi Hugo,

    Thanks for the reply but you didn't read the whole message. In the first paragraph I said I'd also tried an LCD TV and my trusty Sony PVM so the fault is in the video circuit on the...

    Witchy Today, 03:00 AM Go to last post