on the very end, done went and got itself all lost-icated !

Sir Scott. . . . . You certainly seem to have gone thru such a seamless repair of all of the the other aspects of the unit , to then have been confronted with the AF output interfacing of the unit. Not only that, you got to experience that one of a kind smell of a selenium rectifier when arcing at some of its plate interfacing junctions, or even bubbling up from a plate surface if being REALLY overloaded. Just a bit of what I can throw in is the aspect of that unit being in the 63-64 time era and its shift from the usual all-in-one units of Telefunken with their speakers / chassis all being within one self contained unit. This was shifting to the separate modular concept, wherein there was enhanced acoustical supplication , by the use of the much larger "Tower of Power" #5403 speakers, with their extra afforded degree of baffling . . . for their added bass enhancement. I, also don't have a schematic on that particular unit, nor its companion #2430, but with its 13 tube complement, would expect that tube count to include at least one dual purpose tube handling the FM de multiplexing function. Now in considering the rest of the tube count, that would seem to probably NOT be using 4 tubes for push-pull AF output stages, but probably are using but a single tube for each AF channels output. Since you are with out schematic, I am going to place an example, in the form of the typical treatment of the AF output section of another Telefunken unit. The big variant in your system is the NON presence of the speakers in your units small physical footprint. Looking at the schema at its right top corner, you are seeing the treatment for the plugging in of an external speaker for one channel. With no speakers in the unit, their switching situation of the output was a bit different, in the aspect of a potential operator error situation. Should a person non familiar with that unit, encounter it ,and power it up, needless to say the non presence of sound after a prescribed warm up period along with a tuning knob kablitzing across the band, with still no result, would then initiate a bringing of the volume on up higher, or ultimately to the max. That is not good, as on a solid signal, and with the volume a max there is the potential for an arc over and breakdown of the primary of an AF output transformer. ( Peak to Peak audio excursions of on upwards of + 500,000 milli VOLTS . . .baby cakes !) Therefore, your speaker plug switching on your unit is oriented towards protecting the receiver with NO connected speakers, while this schema described unit is merely concerned about switching between the internal speaker cluster to an external speaker. On your units original speaker plug there is a plastic extrusion which activates the changover switching, plus the contacts pins are a bit larger and heftier than the normal DIN connectors. A few words describing those connectors rarity. . . . . its emphasis, being on an end statement. A rare and super desirable tube tuner, is the Telefunken Opus 5430 MX Stereo. There are two matching Telefunken 5403 speakers that came with this unit. Included with this tuner will be the two main speaker plugs that are unique to this unit. And that's HEAV-EE on the UNIQUE, now, as per my supplied mini-photo, you just don't happen to have that paper accessory envelope that is just to the front of the Blue-black-white features brochure , and is containing a set of those speaker plugs. Looking at the marked up schematic, you can see my micro rectangular designations of the blue (woofer), green (midrange /squawker) and red electrostatic tweeter functions. So the use of a #5403 external speaker would be dependent upon a ground line and a hot audio line being routed to an external speaker, to meet its woofer and midrange units requirements and then IF there is also an electrostatic speaker(s) in that speaker unit , throw in another two connections, for dealing with higher voltage AF levels fed to the tweeters. In YOUR particular situation now , with whatever speaker you intend to use , it seems to only be the need of going inside and finding the two output transformers, located close to their respective output tubes. Then you find the schematics BLACK BOX reference [C] to get the ground connection to feed to your speaker and then take note that if Telefunken follows its norm, there will be a higher impedance portion of the secondary that is feeding down the GREEN SQUARE signal path mark-up that ends up down at a RC combo that goes on to inject a bit of negative feedback to an earlier AF stage . That line is being of no interest. THE secondary tap off which you are interested in, is the BLACK BOX reference [B] . that is where the other line to feed your speaker would be connected. Route those two new wires to whatever connector that you choose to solve your set to speaker interfacing problem. Move to the other channel and replicate for the other channel. Track down both AUDIO power lines ( [B] 's ) to their original [A] connections to see that TFK connection poses no loading problem on the line, with there being no plug presence of that TFK connector, if it IS doing so, disconnect the AF line at [A] point on the connector. My 2 Deutsch marks worth . . . . . for whatever nowadays worth that it still retains . . . . . . against the Euro. 73's de Edd