Monitor problems on my Lisa

Hello,
I have a Lisa 2/10 and I have 2 problems with the monitor :

1. it has what is called in the user guide the "rolling picture" problem. The image flickers and I see 3 copies of the image rolling very fast.
2. after a while (a few minutes), the monitor goes off. I have to leave it turned off for a few hours before I can use it again.

Does anyone have an idea of the source of the problem ? I first thought my power supply was not powerful enough (150W, 1A) but disconnecting the hard drive did not change anything.

I would appreciate any advice.

Thanks.

Pascal.

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. Received on 2015-07-15 16:43:08