u/Jazzlike-Coconut4945

Recently I bought a VCR-DVD combo off of eBay by a guy that said it was ”refurbished“. The dvd part works fine enough, but the VCR part of the system showed a degraded picture with waving audio. As the tape progresses through, eventually it stops all together and the system turns off. I tried to clean parts of the vcr already with alcohol and a Q-tip. If anyone has any ideas what the problem might be that would be great