I recently aquired a Swarzbeck FSME 1515 EMI receiver and it dead or near dead on some of the bands.

Can anyone help with service information or a schematic?

As usual Thanks in advance.

I think I have figured it out. I laid it down under power on it's side to get to another piece of equipment and it started working. There are 2 rf inputs with a switch in between them and I started playing with the switch and I could get a signal some times. I laid the unit face up power off and dripped some contact cleaner into the toggle switch shaft and worked the switch back and forth rapidly. I let the contact cleaner dry for a little while and when I turned the unit back on I was getting signals. Some times it's better to be lucky than good.