It ain't easy.... being GZ!
- Thread starter blu_fuz
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caution
Member (SA)
I'll get the bad stuff out of the way first...
As you know there are still some broken screw posts and missing screws for the chassis and frame. I'm fixing to put back what works and leave the rest for you. When I first tried taking it apart, I jammed the thin screw that goes into the back of the upper tape deck. It's a JIS screw so I try to put a little extra downward force on it to prevent camout, but in the process of doing that, it bent the metal it screwed into, enough so that it got too difficult to turn and seized. I had to grind off the screw head to get the chassis apart. It left a few marks around the screw hole but nothing major. So, that one will have to probably be retapped for a beefier screw.
The radio won't pick up in stereo, and no turning of the pots on the tuner board get me there.
The replacement control board I ended up using actually had bent shafts on the bass, treble and balance knobs. I couldn't feel it when I had it apart. It's enough that they're difficult to turn now that it's all reassembled, but you might be able to scrape the hole a bit larger and be good.
EDIT: The bent shafts was actually a bent KNOB issue, some of the knobs have cracked insides and weren't sitting straight.
The lower tape deck is missing a spring and the right hinge tab, which are both repairable with some patience.
Now the good stuff!
I was able to cut out the old dial window with a grinding wheel, and then sand the opening flat. Actually, I got carried away with the sanding and it took a lot more away from the ridges than I had wanted to, but I was able to fill the gap with glue. You can see the glue but it doesn't look too bad.
Once I got it attached I moved on to rebuilding the heat stakes. I added glue to most of the spots around the glass as well.
The new tweeters fell in real nice, but I noticed one side had cracked screw posts, so I welded them and added zip ties for extra reinforcement.
I noticed the mids and woofers were very faded so I blackened them. Unfortunately I didn't realize that two of the screw posts on one side were damaged, and had been epoxied. One of them only snapped away from the chassis, so I welded that one back on, but the other one disintegrated when the screw was removed, so I rebuilt it from an M70 screw post.
I used my open C100-F as a guide for rerouting the wires, they are nice and secure now!
As you know there are still some broken screw posts and missing screws for the chassis and frame. I'm fixing to put back what works and leave the rest for you. When I first tried taking it apart, I jammed the thin screw that goes into the back of the upper tape deck. It's a JIS screw so I try to put a little extra downward force on it to prevent camout, but in the process of doing that, it bent the metal it screwed into, enough so that it got too difficult to turn and seized. I had to grind off the screw head to get the chassis apart. It left a few marks around the screw hole but nothing major. So, that one will have to probably be retapped for a beefier screw.
The radio won't pick up in stereo, and no turning of the pots on the tuner board get me there.
The replacement control board I ended up using actually had bent shafts on the bass, treble and balance knobs. I couldn't feel it when I had it apart. It's enough that they're difficult to turn now that it's all reassembled, but you might be able to scrape the hole a bit larger and be good.
EDIT: The bent shafts was actually a bent KNOB issue, some of the knobs have cracked insides and weren't sitting straight.
The lower tape deck is missing a spring and the right hinge tab, which are both repairable with some patience.
Now the good stuff!
I was able to cut out the old dial window with a grinding wheel, and then sand the opening flat. Actually, I got carried away with the sanding and it took a lot more away from the ridges than I had wanted to, but I was able to fill the gap with glue. You can see the glue but it doesn't look too bad.
Once I got it attached I moved on to rebuilding the heat stakes. I added glue to most of the spots around the glass as well.
The new tweeters fell in real nice, but I noticed one side had cracked screw posts, so I welded them and added zip ties for extra reinforcement.
I noticed the mids and woofers were very faded so I blackened them. Unfortunately I didn't realize that two of the screw posts on one side were damaged, and had been epoxied. One of them only snapped away from the chassis, so I welded that one back on, but the other one disintegrated when the screw was removed, so I rebuilt it from an M70 screw post.
I used my open C100-F as a guide for rerouting the wires, they are nice and secure now!
caution
Member (SA)
Thanks! You're right, they aren't working. They properly show power level and radio signal, but in record mode they don't swing. Also it doesn't seem to be recording, It slightly erases what's already on the tape but doesn't add anything new.
Hmm... starting to sound like there's another bad part on the amp board where the meters hook up....
Hmm... starting to sound like there's another bad part on the amp board where the meters hook up....
BoomboxLover48
Boomus Fidelis
caution
Member (SA)
Needles are back! I also built a replica door hinge post and melted it in there, and found a spring. Record works now too, even the mics. I had an extra tape drawer liner and found an extra knob for the mixing level. Still no FM stereo and four broken shafts (two for the back, two for the frame) but it feels solid enough to carry around and do some blastin!
https://www.youtube.com/watch?v=D3DriRODDRg
https://www.youtube.com/watch?v=D3DriRODDRg
baddboybill
Boomus Fidelis
Needles are back! I also built a replica door hinge post and melted it in there, and found a spring. Record works now too, even the mics. I had an extra tape drawer liner and found an extra knob for the mixing level. Still no FM stereo and four broken shafts (two for the back, two for the frame) but it feels solid enough to carry around and do some blastin!
https://www.youtube.com/watch?v=D3DriRODDRg
Awesome great job bro 👌ðŸ‘ðŸ‘ðŸ‘ðŸ‘
https://www.youtube.com/watch?v=D3DriRODDRg
Awesome great job bro 👌ðŸ‘ðŸ‘ðŸ‘ðŸ‘
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