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Courier Centurion 40D Restore
- Thread starter 357
- Start date
This is really nice 357.
you are really going all out on this one!
you know when you start cracking meters open, you are doing the full detailed restore.
some things to remember not to forget:
1. clean and oil all the little clock gears, being VERY careful not to get any cleaner or oil on the number plates.
2. give all the VR's on the PC board a quick spray with contact cleaner, and work them back and forth to clean them. (if you are worried about changing the setting, just take a reading before and after)
3. since im betting that you can't find a quality speaker that will fit, i believe there are some techniques that the antique radio guys use to re-condition the speaker cone.
It would be worth looking into, as i can't quite remember which one was best, but i believe one method was mixing elmers glue with water and brushing it on the cone.
apparently it makes a big difference if your speaker paper is really dried out.
you probably are already on top of these things, but i thought i'd add them to the thread.
are you modding the radio as part of this restoration or keeping it all stock?
LC
you are really going all out on this one!
you know when you start cracking meters open, you are doing the full detailed restore.
some things to remember not to forget:
1. clean and oil all the little clock gears, being VERY careful not to get any cleaner or oil on the number plates.
2. give all the VR's on the PC board a quick spray with contact cleaner, and work them back and forth to clean them. (if you are worried about changing the setting, just take a reading before and after)
3. since im betting that you can't find a quality speaker that will fit, i believe there are some techniques that the antique radio guys use to re-condition the speaker cone.
It would be worth looking into, as i can't quite remember which one was best, but i believe one method was mixing elmers glue with water and brushing it on the cone.
apparently it makes a big difference if your speaker paper is really dried out.
you probably are already on top of these things, but i thought i'd add them to the thread.
are you modding the radio as part of this restoration or keeping it all stock?
LC
thanks.I recapped all but 5 caps last night, still got the pll box too.
I used Elna RJB and ARS Silmic for the audio chain.
The radio has the extras already, 41-60 on the tone switch and 10KC on the PA button.
Clarifier goes 4.9KC down.
Its been 5 hours of steady dicking around, plus I seriously need to get my eyes checked.
I'll get some pics up tonight, gonna take a break.
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maybe i need to get my eyes checked too. What am I looking at in that pic?
I don't know what those two things are, but im sure i'll feel stupid when i find out. LOL
If you are interested in opening up the receive and or transmit audio bandwidth, i can see a few caps in the schematic to change. let me know if you want to do this.
I also noticed that D8 and D9 would be the diodes to change out for schottkys for an AM detector improvement.
TR12, the SSB detector could be changed to a 2SC1674 and you might notice a difference, but you might not. shouldn't hurt anything to try though.
I've not done it before, just putting that out there.
LC
I don't know what those two things are, but im sure i'll feel stupid when i find out. LOL
If you are interested in opening up the receive and or transmit audio bandwidth, i can see a few caps in the schematic to change. let me know if you want to do this.
I also noticed that D8 and D9 would be the diodes to change out for schottkys for an AM detector improvement.
TR12, the SSB detector could be changed to a 2SC1674 and you might notice a difference, but you might not. shouldn't hurt anything to try though.
I've not done it before, just putting that out there.
LC
This image shows a disk cap that was shorted against a resistor when I first fired the radio and started sobbing when there was no modulation....thankfully I found it quick and no damage done.
Loosecannon the one picture is the "relays" that are for the channels.
CH1 is 27.365 and 40 is 27.605.
Someone knew what they were doing.
The shitty thing is that I can't get the PLL box out to change the caps because of these relays and the wires.
No way I'm hacking into that mess.
I'll cross my fingers and hope the caps in there will survive.
CH1 is 27.365 and 40 is 27.605.
Someone knew what they were doing.
The shitty thing is that I can't get the PLL box out to change the caps because of these relays and the wires.
No way I'm hacking into that mess.
I'll cross my fingers and hope the caps in there will survive.
- No one is chatting at the moment.
