Attempting to refurb my SE/30, but am not seeing any video
- SE/30 logic + analog boards fully recapped
- I hear a startup chime, but don't see any video
- there IS neck glow
- in addition to recapping the analog board, I also tried replacing both of the ICs (SN74LS38N and TDA1170N), still no picture
- also reflowed all connectors on analog board
- probed video output pins on the logic board with my scope, and I do see a valid looking video signal
- furthermore, swapping in a borrowed analog board from an SE results in a good picture
I'm beginning to suspect that maybe the flyback transformer on my analog board is bad. But is there anything else I should check first?
- SE/30 logic + analog boards fully recapped
- I hear a startup chime, but don't see any video
- there IS neck glow
- in addition to recapping the analog board, I also tried replacing both of the ICs (SN74LS38N and TDA1170N), still no picture
- also reflowed all connectors on analog board
- probed video output pins on the logic board with my scope, and I do see a valid looking video signal
- furthermore, swapping in a borrowed analog board from an SE results in a good picture
I'm beginning to suspect that maybe the flyback transformer on my analog board is bad. But is there anything else I should check first?