Grundig RTV 650 repaired and restored to its former glory

This is a West German receiver made by Grundig around 1970-71. It was costing around 1300 marks back then, more than a monthly wage for the average German. It is the successor of "RTV 600" with which it is almost totally similar (exceptions are the reworked scale, the additional headphones plug and some very minor reworks to the circuitry). These are beautiful receivers made with the highest care possible as to ensure some of the best radio reception out there. Sensitivity in FM is 0.7 microvolts /60 ohm/ 26 dB SNR. It is the best performer i have ever heard. The stations go into stereo easily and without much hiss. This 50 year old reciever throws in the dirt much newer "receivers" from our made in China era. The sound quality of the audio amplifier ain't too bad either. "Only" 20 w RMS per channel ( with 0.1% distorsion) but that was before the power race, when people enjoyed music and not alternative current. For one normal room it is more than enough. Also the bass goes quite deep: the "contour" adds 25 dB at 40 Hz and the normal potentiometer adds another 13 db. To do 38 dB of bass nowadays :)) most modern amps would go into clipping with such values. Things I repaired: It came completely dead, some fuses blown, they blew again. Someone before me had the idea to replace 2 of the rectifier bridges (doing some really amateurish soldering job), of course it was not the cause of the lack of power. One 16 v Zenner diode was dead, taking the power out of the whole 16v rail, which in turn cut everything out. After replacing it, the radio came back to life. I've replaced the fuses, of course. All the scale bulbs have been replaced. The stereo indicator and the "Tunoscope" pilot lights work just fine, surprisingly. The FM presets switch which turned off the light for the small separate scales was dead, had to bypass it, now the light is always on. Unfortunately that switch is some kind of contact blade which is unprocurable. Almost all alluminum electrolitycs (except the ones in the IF filter board, those are very hard to unsolder and can get damaged) have been replaced with new ones. Simmetry and quiescent current have been rechecked, all in order. The final stage radiator does not get hot just mildly warm even after long periods of listening at a loud volume. Despite the fact that originally inside of it there was a ton of dust, fluff.... all the switches and potentiometers work flawlessly without scratches, as you can hear in the video. There are some scuff marks on the scale, but after 50 years, expectable... otherwise it's remarkable how well preserved the exterior managed stay. In the end, it is a wonderful piece of German workmanship from way back in the glory days which deserves all the care, for maybe one more century of service. (And for those who are offended, sorry for my biased inside comments)