[HurtyAC]

Hi All,
It looks like the capstan is not running fast enough. Most likely mechanical problems rather than electronic. Do you have a scope? If so you need to scope the capstan trapezoid and see which way the the sample pulse is running as it will not be locked looking at your pictures, I would say the capstan is running slow. Next disconnect a wire off the eddy current brake for the capstan and it will probably still be running slow? It should run fast at this point! Add a drop of thin oil to the upper and lower bearing of the capstan motor and see if this improve things. Some tapes are starting to "drag" on 1500's I find the Scotch tapes tend to do better than the Philips tapes.