Keymaster
Active Member
I picked up a JVC RX-705V recently in a bundle of gear. Unfortunately, it was sold untested and everything worked except this receiver. It will power up, come out of protection in just a couple of seconds but that's where the good news ends. There are two things that stand out at first. With an antenna hooked up, you can get FM lock but you can only hear sound if you cut the volume all the way up. The second thing you notice is, the spectrum analyzer doesn't do anything. That makes sense, because if the audio was playing, you would see movement but because the sound is not audible at normal volume, there is no analyzer movement. I decided to hook up a tape deck to make sure it wasn't the tuner that was the issue. When I pushed play on the tape deck, the meters pegged out. This didn't make sense because I know the audio wasn't that loud on the tape. I disconnected the RCA's from the back of the tape deck and the meters normalized. So I decided to move the RCA's on the receiver to the CD input, but again, the meters pegged on the tape deck. This didn't make any sense at all and I had never seen this before. I began to wonder if the receiver was backfeeding into the tape deck. So I disconnected the RCA's from the tape deck but left them connected to the receiver. I got my volt meter out and I measured about 12.8 vdc on each side of the RCA cables. This, to me, indicates why I'm having issues with this receiver. If anyone knows what could cause this, I would appreciate it. I checked Hi Fi Engine for a schematic, but they only have one for the same model but it's from 87, where the model I have is from the early 90's. Thanks
