[Terry_VK5TM]

Normally, if the PA transistors are shot, it will take out the fuse as soon as you turn the set on (they seem to more often than not fail short circuit C to E rather than go open circuit).

Did you check both relays?

RL2101 - Rx/Tx voltage switching and is in the body of the set.

RL2102 - Aerial changeover and is hidden behind the back next to VR1501.

Next on the check list is the switched Tx voltages of 13.5V and 8V which are routed to several modules. It would appear the 13.5v one is OK as you are getting the 0.7v on the bases of the PA transistors and it is derived from this line.

These checks will not be easy to do without extender boards, so you may have to pull a module out, solder a length of wire to a suitable point and refit the module (some of the check points are under the band switch and hard to get to).

Next would be to build a simple RF probe for the DVM and back trace from the aerial socket through to the Mod/Demod module while in Tx mode (use CW mode).

It will only give you a relative measure of RF level, but if that jumps up as you go back along the signal chain, it should pinpoint the problem area.

Another common problem if a set has been attacked by a CB'er is the low pass filter coils in the LPF unit, but that is normally only on the 10m band.