[SiriusHardware]

If the socket and its connections are OK it should not matter whether it is a turned pin one or a conventional one. If you are unlucky you have somehow managed to spread / open up the pin 1 contacts in the socket, but replacement of the socket would fix that.

The one potential drawback with turned pin sockets is that they are very, very difficult to remove from double sided PCBs like this without causing damage so if you do fit a turned pin type be absolutely sure that you will never want to remove the socket again.

Your actual problem may be on the PCB - an intermitted connection between the pin 1 pad and its associated track, or as suggested earlier the pin 1 pin of the socket may be folded underneath the socket and not through the hole as it should be - although if it was, the pin 1 pad on the underside would be suspiciously flat with no pin sticking out through it.

There is 'a thing' called freezer spray which is designed for finding thermally progressive faults, you let the fault appear and then go around spraying suspect components - when you hit the right one, bing, the fault disappears so you know that's the guilty component. That's the theory anyway.

Have a good look at the waveforms on IC26 pins 8, 9 and 10 and also at the video waveform on IC3 pin 2. Those waveforms should be clean and sharp with good vertical edges, no rounded corners at any point. Then let the fault appear and have a look at the waveforms again. See anything different?