I picked up a ZX Spectrum +2 on ebay and have plugged it in to test alternative got a very ropey rf output which occasionally changed to a screen of large horizontal black & white lines seemed to be very iffy when moved causing the computer to reset.
After trying to get a decent picture and stable setup the system refused to output a signal at all. Any ideas on where to start on looking for where the problem might be?
It probably didn’t help the the system was sent in the original box but with no outer packaging i,e bubble wrap just brown paper
Barnie














