25-07-2023, 10:22 PM
(19-07-2023, 06:52 AM)Murphyv310 Wrote: Interesting Adam
I wonder why the effects continued with the smaller value, need to switch on my brain later on today.
Good work.
I reconnected C2 with a value of 100pF, which is 10x lower than the factory one, and the P1 potentiometer /1K/ identical to the factory one. As a result, horizontal synchronization improved stability significantly. At a small value of 100pF, the curl on the left side of the screen did not appear /at 150pF and above it was/. Interestingly, after changing C2 from 1nF to 100 pF, the P1 adjustment does not cause any image changes. In principle, P1 can be removed. I think the inclusion of C2 and P1 by the design engineers was a good move, but the circuit was not perfected. A potentiometer is fitted, not a fixed value resistor, which proves the instability of this solution.
