Hi recently bought a sr605 locally for very very cheap about 70usd. Seller said it was working fine so I decided to get it because my previous Yamaha remote was spoilt and I couldn't access the menu for crossover settings. Brought it back tried to power it on and the standby light went off for a few seconds and then came on again. It's not constantly blinking(protection mode) and there's no relay click. Is there any quick fix by any chance before I have to go through the hassle of a refund? Thanks!