At 03:23 PM 8/7/2020 -0700, wa7fwf@gmail.com wrote:

Vince, Â The SCR looks to be the crowbar for a overvoltage, you may have something else wrong also.

http://radioaficion.com/mods/wp-content/uploads/2011/06/DL7VHFs-FT-736R-modi...

There is the schematic for a 736R, not sure what the R difference is but it lists your SCR as a 5P4M, a google search shows many available.

73 Kevin

Thanks Kevin, and everyone else for the help, I have all schematics and original manuals for the rig, but didn't have one for the PSU. Ha, Murphy's law

I think the reason the SCR finally gave out, was I kept the radio on 24/7, and there is a lot of heat in it any way. I need to make up a 12V power cord so I can power it externally.

And Talk about good luck, I also noticed I can buy the SCR on ebay, NEC brand.

Thanks again everyone for all the help.

73