Jon D
Member
I have been using this sight to gain info for quite some time now, but this is my first post. I have been trying to fix this 4000 of my dads. My knowledge is limited to things I have read on this site and Web in general. I have done minor repairs on receivers of my own. Got about 6 now. Anyway, I was using the 4000 when it died lights out and all. Main fuse blown. New one blew immediately. I misdiagnosis early on had me focused on the protection board. The problem turned out to be the bridge rectifier. I replaced it with one from Mouser now the fuse does not blow, lights work, no sound though. When you first power it up there is sound for less than one second. This thing is driving me crazy, but failure is not an option. Been spinning the knobs on it for many years. Any ideas as to where I should focus my attention would be appreciated. My tools are a multimeter, and a cheap esr,lcr. Thanks. Btw, I bought and eight deluxe last week. Was pricey, but worth every penny. Awesome receiver.