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Pioneer RT 701 Motor problem

Hi ! I've got two Pioneer RT 701 Reel to Reel Decks. Unfortunately both of them have developed a similar problem. In the Playback mode only Capstan Motor is working. In reverse mode only reverse motor and in forward mode only Fwd. Motor. When the machine was working well both the motors would run in opposite directions (without putting Reels) to keep some tension in the tape. Can anyone help ?



Pioneer RT 701 Motor problem

Check those big green resistors; part of one may be open.
You might have a control board problem, or possibly bad connections there. No schematic here in the library for the 701--the 707 schematic may lead you in the right direction.
Are your solenoids at the motors working properly?

Pioneer RT 701 Motor problem

Revise los resistores variables de ajuste de tensión de los motores de los carretes, es posible que esten defectuosos, yo sustitui los mios y funciona, suerte.