[ICOM] IC-275H Intermittend Power Drop

[Alex]

Hi there,

I have an IC-275H I recently purchased in pieces on the bench. This radio is suffering from an intermittend power drop that seems to be temperature related. I disconnected the ALC from the IF amp (to rule out high temp./SWR protection) and measure the RF output voltage. This is stable without the YGR (what does YGR stand for anyway?) connected, but it drops to half the value after a warmup time when the YGR unit with the PA is connected. 

I was wondering if this is a common problem with the IC-275(H) and perhaps someone already troubleshooted something similar and could share with me what they found.

Thanks for reading.

73,
--Alex KR1ST
http://www.kr1st.com