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SB-10
Troubleshooting manual
Heathkit SB-10 Series Troubleshooting Manual page 10
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Also See for SB-10 Series
:
Assembly and operation manual
(28 pages)
,
Assembly and operation manual
(84 pages)
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Contents
Table of Contents
Troubleshooting
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ah.1.39.HW-101-35: Poor IF Sensitivity
..............................................................................................................145
ah.1.40.HW-101-36: Receiver Recovery Slow
....................................................................................................145
ah.1.41.HW-101-37: R-940 Shorting To Shield
...................................................................................................145
ah.1.42.HW-101-38: Poor Carrier Suppression
...................................................................................................145
ah.1.43.HW-101-39: Identification of The 6146a Tubes
......................................................................................146
ah.1.44.HW-101-40: Noise or Static From Speaker When Chassis Tapped Lightly
...........................................146
ah.1.45.HW-101-41: Relay Chatter in Any Setting of The VOX Sensitivity Control
............................................146
ah.1.46.HW-101-42: Unit "Warbles" When Chassis Is Tapped
...........................................................................147
ah.1.47.HW-101-43: Poor Sensitivity or Grid or Plate Driver Coils Will Not Tune
...............................................147
ah.1.48.HW-101-44: No Ground Pin on Tube Sockets at V10 And V11
.............................................................147
ah.1.49.HW-101-45: VFO Will Not Adjust Properly
.............................................................................................147
ah.1.50.HW-101-46: Low Power Output; Poor VOX Sensitivity
..........................................................................147
ah.1.51.HW-101-47: Driver Preselector Won't Peak for Full Output at 7.0 MHZ
................................................148
ah.1.52.HW-101-48: PEC [PN 84-22] No Longer Used
......................................................................................148
ah.1.53.HW-101-49: Changeover to 6146B Finals
..............................................................................................148
ah.1.54.HW-101-50: R940 Overheats
................................................................................................................. 148
ah.1.55.HW-101-51: Operation of Mode Switch Trips VOX
...............................................................................148
ah.1.56.HW-101-52: VFO Stops Working at High End of All Bands
..................................................................149
ah.1.57.HW-101-53: Low Transmitter Output; Low Receiver Sensitivity
............................................................149
ah.1.58.HW-101-54: Receiver Audio Troubleshooting Information
....................................................................149
ah.1.59.HW-101-55: AVC Decay Too Fast; S Meter Drops Too Quickly
...........................................................150
ah.1.60.HW-101-56: Low Grid Drive on Certain Portions of One or More Bands
..............................................150
ah.1.61.HW-101-57: Relay Chatter in VOX Mode
..............................................................................................151
ah.1.62.HW-101-58: Receiver Oscillations
.........................................................................................................152
ah.1.63.HW-101-59: Finals Will Not Neutralize; C913 at Maximum Capacity
....................................................152
ah.1.64.HW-101-60: RF Mod in CQ Magazine
...................................................................................................152
ah.1.65.HW-101-61: Parasitic Oscillations
..........................................................................................................153
ah.1.66.HW-101-62: Phase Shift Circuit Board Parts List
...................................................................................153
ah.1.67.HW-101-63: VOX Delay Too Short
.........................................................................................................154
ah.1.68.HW-101-64: Load Control Squeaks with the HW-101-30 Mod Installed
................................................154
ah.1.69.HW-101-65: CW Sidetone Inoperative
...................................................................................................154
ah.1.70.HW-101-66: Rotary Switch Detent Change
............................................................................................154
ah.1.71.HW-101-67: Cannot Zero S Meter with the Meter Zero Control
.............................................................155
ah.1.72.HW-101-68: Wiring for Use With The HD-15 Phone Patch
....................................................................155
ah.1.73.HW-101-69: No Power Output in USB Or LSB; Tune Okay
...................................................................155
ah.1.74.HW-101-70: Sidetone is Too Loud
.........................................................................................................155
ah.1.75.HW-101-71: The #266-1116 Switch Detent Breaks During Installation
..................................................156
ah.1.76.HW-101-72: VOX Cycling
....................................................................................................................... 156
ah.1.77.HW-101-73: Tone in Audio When Switch To CW; Relay Chatters When Key is Closed
........................156
ah.1.78.HW-101-74: Keys Continuously When Used With the SA-5010 Memory Keyer
....................................157
ah.1.79.HW-101-75: R940 Overheats
................................................................................................................. 157
ah.1.80.HW-101-76: Carrier Null Control Installation Change
.............................................................................157
ah.1.81.HW-101-77: VFO Stops Oscillating at High End of Dial
.........................................................................157
HW & SB Series Manual
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Table of Contents
Troubleshooting
Heathkit HW-101 and SB-10x Restoration and Troubleshooting
1
c)General Troubleshooting Tips
26
c.2.2.Unit Receives On Some Bands But Not Others
27
v.2.Transmit Signal Levels
49
ah.1.8.HW-101-6: SB & HW Series Audio Preamplifier & VOX Circuit Troubleshooting Guide
138
ah.1.56.HW-101-52: VFO Stops Working at High End of All Bands
149
ah.2.3.SB-100-3: SB & HW Series Audio Preamplifier & VOX Circuit Trouble Shooting Guide
162
ah.3.8.SB-101-3: SB & HW Series Audio Amplifier & VOX Circuit Trouble Shooting Guide
169
ah.4.6.SB-102-6: SB & HW Series Audio Preamplifier & VOX Circuit Trouble Shooting Guide
177
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This manual is also suitable for:
Hw-101
Sb-100
Sb-101
Sb-102
Hw-100
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