Ok Guys, I have a Hammarlund HQ110A-VHF receiver that does not have the 5U4, if has factory Diodes installed & if has some melted wires in the power supply. I need a schematic with the diodes. Any help?? If you can help, please e-mail me direct. Tnx----Doug W7LNB PS; the clock in not wired in, it plugs into the 5U4 scoket.