You buy another boat anchor!
I bought this SBE-34 for less than a junker HW-32A. It was missing the Collins filter (I had a spare) and was sold for parts and not working.
Replacing the filter and a bit of tweaking of the IF and Mixer transformers and this is what you get. The VFO is subject to some jumping (Damn Analog VFO's) but the dial corrector pot needs a shot of DeOxit and an adjustment of R42, a pot in the VR circuit is needed. There might be a loose connection someplace, but we will track it down.
I have three sets of 6GB5's from former SBE-34 sojourns and a replacement of the ones that came with the radio and the driver tube, a 12BY7, yields 60 watts out on 40 and 20M. So, it meets spec.
This was a late build as it shows Raytheon on the back panel and was made in South San Francisco. One of the PC boards (converter stage) is actually silk screened with parts identified with an outline and value. One other clue about what was touched... red paint was applied to all solder joints after soldering. No red paint means that joint was touched.
Them that know can make it go.
73's
Pete N6QW