[Hari]

Can somebody help with this please -
This is a Sharp, R-209BK model. Microwave display panel has blinking 88.88, but none of the keys on pad works. Microwave is fairly brand new (Keypad plastic cover is still on). Few weeks ago I had the same problem but it worked after few days of rest.
Any ideas what could be wrong. I do not mind repairing if it costs anything below $30 to $40, instead of buying a new one.

I appreciate your help.

Thanks