Replacement amp for external antenna

So I've had an external antenna plus amp since 2007 and it's been working fine until now. I think it may be the amp or the connectors. I tried various things to troubleshoot the powered amp module inside the house without success.

This is my setup: ChannelMaster CM 3019 Antenna (on sale) $59 AntennaCraft 10G202 Pre-amp (on sale) $39

What's a good amp to replace this? I'm going to hire a guy to replace the amp and seal the connectors, he has a $75 amp he can sell me.