[Kenwood] TS-790A PLL help

[Jordan]

Hi... I thought I had solved a PLL problem on 432 in my 790A....

Setting voltages and RF levels went according to the service manual, and 
some levels were off by as much as 2 volts, so alignment brought it back and 
working.....Or so I thought....

I left the rig on with 432 on the sub rcvr. and after about 15 minutes I 
noticed the ............   display was back.

Before I go back in and start to troubleshoot, is there anything in 
particular to look for.... It could simply be a bad trimmer cap , or....?

Any help would be vey much appreciated...!

73...Jordan....