AMERITRON AL811 - Page 27

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Figure 2 remove these resistors if present ..................................................................................... 5
Figure 3 remove terminal strip mounting screws ........................................................................... 6
Figure 4 GDTs remove outer tube socket add lug(s) and GDT AL 811 only .................................... 6
Figure 5 band switch shaft .............................................................................................................. 7
Figure 6 remove siderails ................................................................................................................ 7
Figure 7 properly wired back panel dropped ................................................................................. 8
Figure 8 wires too short .................................................................................................................. 8
Figure 9 Capacitors and MOVs ........................................................................................................ 9
Figure 10 capacitors ........................................................................................................................ 9
Figure 11 MOVs ........................................................................................................................... 10
Figure 12 Generation I input board .............................................................................................. 10
Figure 13 Gen II input board ......................................................................................................... 11
Figure 14 Gen III and later input boards ....................................................................................... 12
Figure 15 All units rear panel down .............................................................................................. 12
Figure 16 All units break or radius shaft rear edge ...................................................................... 13
Figure 17 811H only unsolder and unscrew ................................................................................. 13
Figure 18 811H remove bottom screws ....................................................................................... 14
Figure 19 add GDTs AL811H only (811 was in fig 4) ..................................................................... 14
Figure 20 AL811H 200-ohm Pad .................................................................................................. 15
Figure 21 AL811 200-ohm swamping resistor and capacitor ..................................................... 15
Figure 22 reglue choke all units .................................................................................................... 16
Figure 23 Replace sand color bleeders. Replace diode. ............................................................... 16
Figure 24 Metering and power supply .......................................................................................... 17
Figure 25 Meter and HV Component Locations ........................................................................... 17
Figure 26 D16 form leads .............................................................................................................. 18
Figure 27 Drive vs. Dissipation for various conditions .................................................................. 18
Figure 28 preparing and connecting Zener’s ................................................................................ 19
Figure 29 Zener's with 100k (avoid dropping back panel or early Gen I board) .......................... 20
Figure 30 100K 2W resistor location A ......................................................................................... 21
Figure 31 100K 2-watt resistor location B .................................................................................... 21
Figure 32 Zener location in fan airstream ..................................................................................... 22
Figure 33 remove bead choke ...................................................................................................... 23
Figure 34 form resistor leads to surface solder ............................................................................ 23
Figure 35 clean off board .............................................................................................................. 24
Figure 36 install new PS parts ....................................................................................................... 25
Figure 37 Pre-form and pre-tin leads ........................................................................................... 25
Figure 38 Cut and preform leads ................................................................................................. 26