Sanyo VWM-360 VCR, has weak audio

[radiotvnut]

A friend asked me to fix a Sanyo model VWM-360 VCR from the BPC-era because it has no audio. I have it connected to a TV via the line out jacks on the VCR and there is very faint audio, both with playing a tape and with a signal fed into the RF input. So, does anyone have any service information on this model or any service notes to a possible common problem? If I can't fix this easily, I'll suggest that he visit the local thrift store and pick up one of the many available BPC models that are usually under $10.