FT-991 Weak HF Receive - Receiver fault

Bugger me, the dam think blew again, I was in the WPX contect with my FTdx3000 with the amp and the FT-991A was on 40m. I noticed that in IPO mode on the 991A nothing heard. Lucky I had bought 50 of those little 150 ohm surface mount resistors.

Pulled the bottom off the 991A and found R1005 just next to RL1001. The resistor had broken in two and the cct board was burnt where is sits. Its not worth trying to solder the bloody thing in there as its too small. I tacked a small piece of wire onto the relay pad where one side of the 150 ohm resistor connects and a small piece of wire onto the terminal of J1001. The ends of these two wires sat above the board a little and I soldered one side of the new 150 ohm resistor to one wire, bent the other wire over to touch the other side of the resistor and soldered it.

FT-991 Weak HF Receive

I seem to have a big drop in sensitivity on all HF bands.  It has been a superb receiver for the past year.  Transmit is normal.

On a strong signal with ATT off and IPO the S- meter is at 0.  The spectrum display is near the bottom line.  The same signal with ATT off and AMP1 is S9+5dB and the spectrum display is above the first bar.   With ATT off and AMP2 the S-meter reads about S9+15dB and the spectrum display is on the second (middle) line.    The difference between IPO and AMP1 is an almost inaudible signal to S9+.

A signal that is S-9 on my FT-897D (with that rigs ATT and IPO both off) is barely S9 on the FT-991 with ATT off and AMP2 on and at S0 with no amps (IPO). With the amps off it is S zero.  VHF/UHF  is normal.  Looks like I have a receiver problem.

Back to Yaesu for repair???