Allwave 23 sr#J497

[Thomas Day]

Hi All: I have posted about this set when I got it in 2015, and have some additional questions/information about it.
This appears to be an in-between version from the 5 knob set to the 7 knob set, in that it has the 2 antenna posts and the new antenna coupling system, but is a 5 knob set. The chassis has been much modified, and the chrome is in rough shape, so it would never be a display piece. I have been doing some work on it the last few days, and coming up with some questions, and figuring out what I would need to do to restore it electrically. Is there an available schematic for this? I can compare it with my current allwave 23, since it looks like most of the circuitry is the same or close enough. The good news is that aside from the modifications, most of the set is intact, and replacing the caps and some of the wiring that has deteriorated or been clipped off would be easy. I recapped my current 23, serial #K480, when I got it.
I do not have the power supply or speaker for this.
I was given an approximate production date when I posted the serial # in 2015.
I have also gained some insight into how it was built, all wiring first and components added next, and since I have done a lot of construction and repair over the years, this makes repair much easier.
Any other information anyone could add as to rarity or anything else would be appreciated. It may at some point play again.
Thanks
Thom

[Thomas Day]

Dave, the movement itself does work, but the pointer is bent, and it doesn’t travel well. If you have one’ let me know cost and shipping. 
Thanks, Thom. 

David C. Poland said:

Thomas - Re: your AW-23 tuning meter, check for a broken wire. The coil wire is very small gage and vulnerable to corrosion where the ends are soldered to the the junction for the heavier hook up wires. I have had to make that very repair to a meter to restore operation. 

If you cannot make a repair, Let me know - I probably have one from a junker chassis.

[Thomas Day]

Bruce, email is [e-mail]. Thanks

bruce edward said:

hi Thomas, I have a scott allwave 23 speaker(needs recone) and a scott allwave 23 amplifier chassis.  I am looking to sell these. I had intended to build an allwave 23 from the bottom up so to speak, but I have too many unfinished projects. I don't know if there is the ability to send personal messages here, If you are interested, send me your email address

thanks

bruce

[David C. Poland]

The pointer is 1) very short and 2) is bent - so that the dial lamp will cast a shadow of the meter pointer on the multicolor dial insert. 

You sure it can't be adjusted to works OK?

[Thomas Day]

Dave. Let me know cost and shipping for the tuning meter.  

Thomas Day said:

Dave, the movement itself does work, but the pointer is bent, and it doesn’t travel well. If you have one’ let me know cost and shipping. 
Thanks, Thom. 

David C. Poland said:

Thomas - Re: your AW-23 tuning meter, check for a broken wire. The coil wire is very small gage and vulnerable to corrosion where the ends are soldered to the the junction for the heavier hook up wires. I have had to make that very repair to a meter to restore operation. 

If you cannot make a repair, Let me know - I probably have one from a junker chassis.

[Thomas Day]

Another request for Allwave 23 J497. These were shipped with a front panel attached. Would anyone have one of these for a 5 knob version chassis?

Thanks, Thom. 

[Thomas Day]

Bruce. My email is [e-mail] or [e-mail]. Let me know how much. 

Thomas Day said:

Bruce, email is [e-mail]. Thanks

bruce edward said:

hi Thomas, I have a scott allwave 23 speaker(needs recone) and a scott allwave 23 amplifier chassis.  I am looking to sell these. I had intended to build an allwave 23 from the bottom up so to speak, but I have too many unfinished projects. I don't know if there is the ability to send personal messages here, If you are interested, send me your email address

thanks

bruce

[Thomas Day]

Update on Allwave 23 J497. I posted earlier that I have this radio working, except for the green band. Checking revealed that the oscillator didn’t work on that band. Checking the coils for this band showed that one of the coils was ‘open’, but wiring was not original. Figured out that a winding had been added and connections miss wired. Restored original wiring, the plate coil is good, removed the added winding, and reassembled the coil wheel. Green band now works.  This chassis was seriously messed with by a previous owner, and challenge to restore, but I think it was worth the effort. It seems this chassis is an inbetween the early 5 knob and the later 7 knob as it has the later twin antenna posts, but is a 5 knob version. 
Thom. 

[David C. Poland]

Also - on a related matter,

The low end of the green SW band could go into parasitic oscillation on the 5 knob AW-23 model and also cause the voltage regulator tubes to go dark.

There is a Scott designed modification to remedy the problem. 

Maybe Kent can add it to the Scott Archive set folder for the AW-23. Maybe yours has already been modified or maybe someone lacking the work around did the mischief you have.

[Thomas Day]

After seeing this and rechecking the green band, it does kill the regulators at the low end. I found the mods David mentioned, and tried it, with no success.  It recommends soldering the lug directly to the chassis. My thought would be to drill a hole and use a screw and lockwasher to provide a better ground. Not sure if there is enough clearance on top to do this. My other Allwave 23 K486 does not have this exact problem, but does go into oscillation at several points on this band. K 486 does not have the filament bypass caps. 

Thom. 

[Norman S Braithwaite]

If not already done, the machine screws fastening the solder lugs to the tuner stators must be loosened and re-tightened before looking elsewhere.

Norman 

[Thomas Day]

Hi all: I had my Allwave 23 sr#k486 on this afternoon. Sound just quit and the regulators went dark. Replaced the oscillator tube with no results. Regulators came back on, but no response.  Finger test shows that all other circuits are working. Original osc tube is good, as it checks out in J 497 chassis. So, I guess it is time to pull the chassis and do the service I have put off for years. 

Thom. 

[Thomas Day]

Update on K 486 Allwave 23

I had the radio on yesterday when the sound simply quit. Using the “ finger test” on the grids of the RF and  mixer tubes provided noise thru speaker. At the same time, the regulators went dark. Indicated that the oscillator tube quit. Replacing it did not fix it. Oscillator tube checks good in J 497 chassis. replacing Rf and mixer tubes with known good tubes also made no difference. Built an extension cable for osc tube. Voltage checks seem  good.  Seems that the oscillator simply quit, all bands affected. I have resisted pulling this chassis, amp and speaker, but now it looks like I need to. I have done a complete rebuild on J 497 chassis and it seems to work well. Guess I will do the same for K 486. Also for Kent,, when I first posted about K 486 in 2011, I mistakenly listed the serial no.  as K480. 
Thanks

Thom.