Philips dcc 134 playing for some seconds

Hello, I have just found a dcc 134 in perfect cosmetic condition. His problem is that when you turn it on, it starts for a few seconds, then it stops. The battery is well charged, it works perfectly on my DCC 175.
Anyone have an idea of the problem?

Hi, Most likely the belt, motor, possibly pinch rollers.
When you take the tape out, is t he tape looped outside the shell?

Many thanks for your quick answer.
Belt and pinch rollers seem to be ok. Tape works fine in my dcc 175.
I’m gonna replace the belt anyway.