Hello all, I have a new to me Galaxy 1000 amp. I purchased it untested. For a good deal I thought. When I plug the amp in and turn it on. It lights up as it should, fan comes on , and tubes warm up. After letting it warm up for about 5 minutes. I keyed the mike. Started hearing clicking, lights in radio room dimmed, and seen blue arching inside case. Released mike turned down antenna output and turned down plate voltage. Keyed mike again same thing happened then the fuse on rear blew and I lost all power. I opened the case and looked where arching was coming from. Nothing appears burnt, but arching was definitely coming from inside the relay near rear of amp. Any help would be appreciated as my local tech only works on solid state equipment. And I've heard horror stories when it comes to shipping tube equipment. Thanks in advance.