Quoted from GRUMPY:
The 2 top flashers (yellow) come on as a pair.
The 2 left flashers (red) come on as a pair.
The 2 right flashers (red) come on as a pair.[quoted image][quoted image]
Thank Grumpy,
I've managed to sort the back box flashers, as that was dirty bulb holders, and the back of the pf flashers, dirty bulb holders again.
Strange why only the top flasher works each side. The weird thing is I have voltage (25.6dcv) at the 2 lower red flashers each side of the bulb, just the same as the top 2 red flashers, and they are new bulbs and tested. All the resistor boards have the same voltage across the long resistor except the one right at the back of the pf.
Any thoughts on why I have no sound Grumpy, just a slight hum which is normal? and just the faint beep when pressing SW2. I have taken all the scanbe's with SIP's on both the cpu and sound board, and yes I tested every SIP before replacing the chips in them. Checked the ribbon cable for continuity and that its the right way round. I have fluctuating -12.31 to -12.56vdc, earth and 5.02vdc at J3 on the sound board. Starting to run out of ideas to check. I think it worked before the upgrading of board parts