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#12
12-24-2022, 09:18 PM
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I have seen this before, not with a watchman, but IIRC it was a Syphonic Minni TV, and it was a filter cap that was weak. Are you using a original Sony adaptor?
Some adaptors have very little filtering and this could be the problem. If the ripple goes away on battery power you can be certain it's a filtering issue. There is one cap that might be weak inside the TV and I marked it.  Another thing you could try is a capacitor across the power out of the adaptor. 1000 to 2200 UF 16 volt and see if the ripple goes away. 
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