"If I can find it - Scott wrote (in one of the Scott News issues - about how he did not feel the metal tubes were any good. I very much doubt it came with metal tubes from the factory."
The Fine Things are Always Hand Made
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Kent King
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Kent King's Discussions
AW23 tuner hum
Started this discussion. Last reply by Thomas Day Aug 29. 9 Replies 0 Likes
Ok folks, I need some ideas. I have an AW23 tuner that has significant hum. And it is the tuner: running this tuner on a different amp/speaker, there is hum. Running a known good tuner on this…Continue
Scott AW23 extension speakers
Started this discussion. Last reply by Robert Meader Aug 11. 7 Replies 0 Likes
So I have this speaker in my collection: …Continue
Two auctions - many Scotts
Started this discussion. Last reply by David C. Poland Jul 4. 9 Replies 0 Likes
Donley Auctions (www.donleyauctions.com) has a number of chassis/amp/speaker in an upcoming auction. I found it interesting that all the serial numbers…Continue
AW23 alignment issue
Started this discussion. Last reply by Alex R. Whitaker Nov 29, 2023. 8 Replies 0 Likes
Looking for advice and ideas. I'm restoring an early AW23 for a friend. I replaced all the wax caps and have replaced the resistors in the C divider (out of spec, now have good divider voltages). IF…Continue
Kent King's Page
Latest Activity
"That looks great!! Excellent restoration!
Kent"
"I am just starting on a 1939 Philharmonic Deluxe remote control set and the vast majority of the tubes in it were Sylvania "green leaf" stamped. The pair of 6L7s in the expander were both Arcturus however, as were a couple other obvious…"
"One off the wall I can think of, check the minus supply for ripple or signal with a scope. i know you said that another chassis with the same supply works fine, but there may be something in this chassis that is not the same. "
Need a "parts" RC6 phono
A collector has reached out to me seeking parts for an RC6 phono - if anyone has one that is good for parts, please drop me a note. Thanks!!KentSee More
"This sounds like a possible case of a bad ground connection somewhere resulting in hum and allowing the audio signal to travel through a ground wire. Try jumping lugs and terminals that are supposed to be at ground to the chassis using a short…"
"OK - time for an update, as my problem remains and I have run out of things to try:
I have replaced the interstage transformer, all the caps and resistors in the bass control circuit and the 1M resistor connected to the volume control. I redressed…"
"The bass control switch looks good, seems to have continuity. Both the 2nd audio tubes have the proper grid bias (about -7.5v). And the plate on the 1st AF is good...in fact, all voltages are well within tolerance. I am really thinking it may be the…"
"So hum remains after 1 st audio tube is pulled. Looking at the diagram, next is the bass control - are both channels of your bass control switch in good condition? making solid contact.
I found a fault in another Scott with push-pull drivers. With…"
"I did go back and look at a couple things - one is interesting: if I pull the grid leads on the 2nd audio tubes (PP 6C6), the hum drops <significantly>. Not entirely gone, but about 90% reduced. Also checked all voltages, they are spot on. I…"
"Thanks to both of you - we're largely thinking the same things. Regarding the hum, it sounds 60 cycle. And Dave's idea of pulling the 1st audio tube - I went and tried that quickly, hum is still there. I won't have a lot of time the…"
"do wonder about a filament to cathode leak or short on some tube.
Is the hum there with the 1st audio removed? or either/both 2nd audios?
is it 60 cycle? or more of an un grounded audio cable kind of hum?"
"Could be a broken shield wire, or some wire that is a ground return. Make sure your filament wiring hasn't been scooted over by a plate or grid lead. If you can't find something like that, then you'll probably have to…"
AW23 tuner hum
Ok folks, I need some ideas. I have an AW23 tuner that has significant hum. And it is the tuner: running this tuner on a different amp/speaker, there is hum. Running a known good tuner on this amp/speaker sounds great - the hum is in the tuner...so...I swapped out the 6C6 audio tubes (all 3), no difference. Also swapped the 2nd det - no luck. Turning up the bass control really increases the hum, but there is a feedback loop in that circuit, so that doesn't really surprise me. With the volume at…See More
"Russ -
First off - for odd things like that coil, you didn't need to rewind it - I have over a dozen Phantom chassis available for parts, I can easily pull an original off one of these sets. This is true for any odd electrical part in the set.…"
"I'll try to get some pics for you this evening - however, very few sets out there are "original", most saw service in the 50s/60s and beyond. Also, Scott did not use the same capacitors at all times, he sometimes switched…"
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Kent King's Blog
Need a "parts" RC6 phono
Posted on August 29, 2024 at 4:36pm 0 Comments 0 Likes
A collector has reached out to me seeking parts for an RC6 phono - if anyone has one that is good for parts, please drop me a note. Thanks!!
Kent
Restorable Philharmonic for sale
Posted on July 4, 2024 at 4:45pm 2 Comments 0 Likes
I have a pretty decent pointer dial Philharmonic, with the midwest station dial (new replacement, original was cracked). The set is complete and chrome is very decent, this set will turn out great with a good cleaning and restoration. Includes a full set of tubes (the smaller 6L6 tubes are GA, not G, couldn't find 4 matching ones). Amp has some rust but is also cleanable. And we have a good 15 in pedestal speaker with it.
I will not ship this, but will meet you or deliver…
ContinuePhilharmonic Controls
Posted on July 3, 2024 at 5:57pm 0 Comments 0 Likes
I've been working on several Philly sets and I am really just appreciating all the differences in the various sets. So the earliest ones had a series of 5 capacitors which are switched across the plates of the P-P expander tubes. This feature was changed to a treble control and also removed if you had a remote control chassis. I need to know what the rotating switch looked like for the assembly shown here:…
ContinueSales Brochure Wanted
Posted on July 3, 2023 at 8:27pm 0 Comments 0 Likes
I found this reference in a 1928 sales booklet. I would like to find the piece described. Next best - a good scan of one if you have it:
Comment Wall (21 comments)
- At 10:58am on October 30, 2023,
Thomas Day said…
Hi Kent:
I can send the money for the power supply Wednesday. Let me know how and where to send it. iI have used paypal in the past.
Thanks Thom. 6448 S Fairfield Ave. Chicago, Il 60629. 7737324913
- At 11:08am on April 27, 2022,
Bill Whelan said…
Hi Mr. King- I trust you have seen many of the customer cabinets that EH Scott customers commissioned in the 1930. I a trying to identify if this cabinet originally has EH Scott electronics installed in it. If not, any ideas?
Thanks you, Bill Whelan
- At 6:28pm on July 16, 2021,
norman david warren said…
got the trimmer ok Thanks Norman W.
- At 12:52am on July 29, 2018,
Ralph Kearton said…
Hi Kent
I'm Keen to get a copy or the collectors guide
However I would need it shipped to NZ
The eBay listing doesn't ship herec
Got any ideas as to. How I can get one
I've just signed up to pay pal if that helps
Cheers Ralph kearton
- At 5:57pm on January 28, 2017,
Kent King said…
that image is great! I will add it to the archive. Thank you!
- At 2:50pm on January 28, 2017,
Joseph W Strickland said…
Kent;
I hope this attachment works. I finished the composite figures 26 and 30 for the Late version 800B. I found this helpful in tracing out the electric tuning arrangement of the 800B receivers.
Joe
If this turns out to not be satisfactory resolution and detail, let me know and I will try sending the *.pdf file which is 5.3MB.
Joe
- At 1:58pm on January 14, 2017,
Kent;
I took a closer look at the Late 800B parts radio tuner chassis that I have. It is SN 6182 and I found its final test stamp inside the preset tuning assembly backplate and the date is Jan 15, 1947. So that one can be added to your database.
I took the time to take a good photo of the Late version 800B AM SW RF compartment underneath. This unit has never had any parts replaced in that area, so this part of it is unmolested. I had just noticed that the Early version SN 1035 that I have had already been worked on and there were some changes to bypass capacitor placement that I do not agree with. My intent is to put it back as close to original lead dress and parts placement as possible. Sometimes changes in part placement and lead dress can cause significant problems to develop and result in inability to properly align RF circuits.
Joe
- At 7:34am on November 23, 2016,
Thanks you! I have added your cleaned up diagrams to the Scott Info Archive 800B folder. Your work is greatly appreciated!
Kent
- At 4:50pm on November 21, 2016,
Kent;
Yes I am willing to contribute these for fellow members and others use. I enjoy doing this type of work. I was originally in product documentation at Collins Radio which included doing schematics.
Joe
- At 8:00am on November 21, 2016,
Joe -
That's great...when you get them done, I will post them in the archive if you are willing. All such work helps everyone here. That is what this forum is all about!
Kent
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