Hi I have a jvc kaboom & the cassette player is not working and makes a clicking sound when turning the unit on
Thanks , I will start with 1 and take it from there .From the factory, only 1 belt was installed. Double belts will physically fit but the tension increases enough which in my experience, can cause the mechanism to not operate correctly. I suppose some trial and error is necessary but I also don't think it will be the same for every example. If you need to give the motor a slight "push" to get it to operate, it could be that the circuit has too much voltage drop (perhaps a dropping fusible resistor has changed in value?) or the motor is getting weak. Just something to consider.