Hi folks! I just came into a Marantz Model 27 for a very reasonable price, but it did come with some problems. Marantz 27 front by mikepick posted Apr 15, 2018 at 5:03 PM The reason it was being sold was that the left channel begins to distort and eventually drops out after a certain amount of time. I've verified this twice now by running it for a while. Eventually the left channel begins to softly distort, starting with a kind of burping and farting on the louder sounds and then the channel volume begins to fade. The rear top of the unit then becomes quite warm. The problem exists across all the inputs in my testing. The other problems are somewhat minor. The signal meter does not seem to work, it is lit from the left side but does not move at all when tuning stations. The tuner is a little misaligned as well, the local NPR station at 93.9 comes in at 92.75 or so on the dial. Looking through the service manual, it seems like adjusting the tuner is pretty tricky and so I'm willing to live with that particular issue. On an initial interior inspection, the unit appears quite clean. I did notice some suspect goop on a transistor heat sink on the power board, so I'm wondering whether a bad cap might be the issue. Marantz 27 Main amplifier board by mikepick posted Apr 15, 2018 at 5:01 PM Goopy transistor heat sink by mikepick posted Apr 15, 2018 at 5:01 PM Any advice would be appreciated. I still need to do some tests to see if the signal is good from the preamp when the channel drops out.