Rider's Wurlitzer 1930s and 40s amps and auxilary amps!
I have in my collection of manuals a bunch of Rider schematics I photocopied from a library back in the 90s and noticed I was missing a couple of pages so started looking to see if I could complete my collection. I did find them ALL on archive.org in Vol. 13 of the archived John F. Rider collection - and here is the link to the starting page of that Wurlitzer section: archive.org Rider's Perpetual Troubleshooter's Manual, Vol 1-23 with Index : John Rider : Free Download, Borrow, and Streaming : Internet Archive <#> Rider's schematics and servicing data for most tube radios. 🔗 https://archive.org/details/riders_202008/Vol%2013/page/n1577/mode/2up <https://archive.org/details/riders_202008/Vol%2013/page/n1577/mode/2up>  at 30GB I'm unlikely to download the entire Rider library just yet, but if other folks want to rummage through the collection and see if Seeburg, AMI (Automatic Music Industry), Rockola, etc, and more Wurlitzer are present I won't stop them - so long as they post the links here. Note the Indexes are on the upper left of the list of volumes. Wurlitzer appears in Vol 4, 5, W6, W7, 8, and 13 according to the first index. I hope I've helped a few folk with this post today... John :-#)# -- John's Jukes Ltd. 7 - 3979 Marine Way, Burnaby, BC, Canada V5J 5E3 Call (604)872-5757 (Pinballs, Jukes, Video Games) flippers.com "Old pinballers never die, they just flip out"
I also have a scan of a large collection of Rider pages under the "PA" Rider heading - which I can't find online other than my copy link below, and I am missing page "WURLITZER PA PAGE 1-40" from this collection: <https://flippers.com/pdfs/Wurlitzer_USA/Wurl_Rider_P30_to_1100_Amplifier_Series.pdf> https://flippers.com/pdfs/Wurlitzer_USA/Wurl_Rider_P30_to_1100_Amplifier_Ser... Starts with the P-30/P-35 amp, and goes up to the 1100, 45 pages. John :-#)# On 2026-07-16 11:01 a.m., John Robertson via Jukebox-list wrote:
I have in my collection of manuals a bunch of Rider schematics I photocopied from a library back in the 90s and noticed I was missing a couple of pages so started looking to see if I could complete my collection. I did find them ALL on archive.org in Vol. 13 of the archived John F. Rider collection - and here is the link to the starting page of that Wurlitzer section:
archive.org
Rider's Perpetual Troubleshooter's Manual, Vol 1-23 with Index : John Rider : Free Download, Borrow, and Streaming : Internet Archive <#>
Rider's schematics and servicing data for most tube radios.
🔗 https://archive.org/details/riders_202008/Vol%2013/page/n1577/mode/2up <https://archive.org/details/riders_202008/Vol%2013/page/n1577/mode/2up>
 at 30GB I'm unlikely to download the entire Rider library just yet, but if other folks want to rummage through the collection and see if Seeburg, AMI (Automatic Music Industry), Rockola, etc, and more Wurlitzer are present I won't stop them - so long as they post the links here. Note the Indexes are on the upper left of the list of volumes. Wurlitzer appears in Vol 4, 5, W6, W7, 8, and 13 according to the first index.
I hope I've helped a few folk with this post today...
John :-#)#
-- John's Jukes Ltd. 7 - 3979 Marine Way, Burnaby, BC, Canada V5J 5E3 Call (604)872-5757 (Pinballs, Jukes, Video Games) flippers.com "Old pinballers never die, they just flip out"
Long ago I think you asked to see the omt computer board where it was running hot. Well 6 months later, here it is! I forget the resistor number and don't have a front view. This is the area just above the +5 regulator (upside down). I have some more to send you, including the inter-connector board but I think I somehow need to figure out what Filelink is and how to use it. Or shrink the picture images. As for the interconnect plugs, I think I finally realized an easy way to reinstall without mixing them up. I also have some pics of the cables that are much clearer and brighter than what you sent me (thank you), so let me know if I should send it. I wish I could stay organized or you would have gotten this long ago while it was fresh in your mind. Oh, on this board I could tell that all the troublesome transistors had been replaced already, but I couldn't get the cd player to work. I ended up replacing all of them again and it worked great. My only guess is that someone removed all the flaky transistors, tested them, and then replaced them again? They were the same the factory used (I forget the number, and I forget what I replaced them with :( Tony
participants (2)
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John Robertson -
Tony Miklos