I searched earlier posts and found someone with a similar problem but our issues appear to be different. First ill say i have very limited electronic repair or testing ability. That being said I have a mechanical back ground so if you have patience with me I think I can be guided...lol.
I got this receiver from my uncle. He wanted me to clean it up for him and give it a once over. He bought it at an auction. It was in a room inside a barn. Needless to say it was filthy and exposed to the humidity of New York state. When I brought it home and plugged it in I was surprised to find that it worked. Although all the contacts and pots needed to be cleaned. I began do disassemble the unit and clean it. First i used deoxit cleaner then used the gold deoxit. I let it try for a few hours and then gave it a go. Wow i was impressed. Very good tuner and clean sound. Everything but the meters on the front worked. I figured i would let it warm up a bit and then give it some more power. After 15 minutes at 1/3 I figured the test speakers I was using weren't drawing hard enough cause it was barely warming up. I was on the way to get a bigger set of speakers to hook up when I heard a thud. Blown fuse. I replaced it and tried again. It growled a bit and blew another fuse. I seen in the other post I referred to that the diodes 801 and 802 could be causing the problem. I tested them and they both tested weird so for the $1.19 cost I went ahead and replaced them. I made sure the new replacements (radio shack #IN4003) were installed correctly. I replaced the fuse and tried again. This time it didn't growl but still blew the fuse. I tested the ac output of the orange wire leading to that fuse and it tested 41v. Seemed to be normal? At this point I have no idea what to test. Any help would be greatly appreciated. Thank You!!!
I got this receiver from my uncle. He wanted me to clean it up for him and give it a once over. He bought it at an auction. It was in a room inside a barn. Needless to say it was filthy and exposed to the humidity of New York state. When I brought it home and plugged it in I was surprised to find that it worked. Although all the contacts and pots needed to be cleaned. I began do disassemble the unit and clean it. First i used deoxit cleaner then used the gold deoxit. I let it try for a few hours and then gave it a go. Wow i was impressed. Very good tuner and clean sound. Everything but the meters on the front worked. I figured i would let it warm up a bit and then give it some more power. After 15 minutes at 1/3 I figured the test speakers I was using weren't drawing hard enough cause it was barely warming up. I was on the way to get a bigger set of speakers to hook up when I heard a thud. Blown fuse. I replaced it and tried again. It growled a bit and blew another fuse. I seen in the other post I referred to that the diodes 801 and 802 could be causing the problem. I tested them and they both tested weird so for the $1.19 cost I went ahead and replaced them. I made sure the new replacements (radio shack #IN4003) were installed correctly. I replaced the fuse and tried again. This time it didn't growl but still blew the fuse. I tested the ac output of the orange wire leading to that fuse and it tested 41v. Seemed to be normal? At this point I have no idea what to test. Any help would be greatly appreciated. Thank You!!!