Replacing Rubber Belts In VCRs, Turntables, And Tape Recorders. Are some designed to fail?

https://www.tvrepairinfo.com
Here is the company website I purchase my replacement belts from. http://www.russellind.com/prbline/prb.htm
There was once a time where replacing rubber belts in VCRs and Tape Recorders was a big part of repairing consumer electronic equipment, and knowing how to measure the belts correctly was a must. Surprisingly some of the belts I saved over 25 years ago are still good, where as others have turned to tar or dried up and cracked.
If you don’t have one of gages I demonstrated to measure the correct belt size, you can use a calipers to measure the belt thickness in thousands of an inch, and the inside circumference in inches or centimeters.