Hello everyone

Seeking help! I've recently acquired an old Toshiba D-VR35 DVD/VHS recorder but, after the first couple of plays its started to show a E507 error message. The message appears as soon as the machine powers up. The video is playing fine behind the error message but I can't see any way to clear it. I've left it unpowered for a day in the hope it would self resolve but no luck.

I know its a long shot, but thanks for reading.