Part 1 of 4 Repairing a Grundig Valve TK14 reel to reel tape recorder that was not recording

Please see all 4 parts if you wish to see how i fixed this unit and also posted some good CRO waveforms so you can check your own units.

[@jjarratt]

Very interesting. It may come in handy when I finish restoring my TK54.

[@tonymarshall5033]

Do you know why grundig gdm18 mic woud be low at full vol and magic eye not moving when in use with grundig tk14