need tips

[mac daddy freshness]

hey boomboxery world i bought a sencor s-4550sw and it is a legit box but for some reason when i am playing a tape it sounds perfect when im turning up the volume past 3 the tape sounds like its playing in slow motion does anybody know whats the problem with my "child"lol

 

[blu_fuz]

My Lasonic 975 does that. Low volume = fast tape and mid volume = slow tape

 

[saxonman]

it's not getting the correct voltage maybe power supply????? well thats where i would check first anyhow !!