20AXMK1 / GEC [TV (chassis)]

• Reduced vertical size.
• Frame hold control unstable and constantly needs adjusting or incorrect frame speed.
• Red luminance signal is missing.
• Dead.
• Bright raster.
• EHT is missing, line timebase ok.
• No green luminance signal.
• Degauss circuitry does not function.
• Brightness fault.
• Ghosting effect. (GEC - 20AXMK1 information)
• No red, green or blue luminance signal. (20AXMK1 tip from GEC)
• Picture grainy and sound noisy. (service info for GEC -20AXMK1)
• No audio. No picture.
• Power output transistor TR502 (BU126) keeps failing.
• Striations.
• Synchronisation is missing or lost intermittently.
• Frame collapse or intermittent frame collapse. (GEC - 20AXMK1 information)
• Ghosting effect.
• Green luminance signal is missing.
• Unstable frame hold control and constantly needs adjusting or incorrect frame speed.
• No audio. No picture.
• Horizontal bars move up and down the screen.
• Jagged verticals.
• EHT is missing, line timebase ok.
• Ballooning effect.
• CRT heaters do not light up.
• Blue luminance signal is missing. (service info for GEC -20AXMK1)
• Bright raster with flyback lines.
• Frame collapse or intermittent frame collapse.
• No audio. No picture.
• Green luminance signal is missing.
• No audio. No picture.
• Incorrect line speed or unstable control.
• Bend on verticals.
• Red luminance signal is missing.
• Horizontal bars move up and down the screen. (20AXMK1 GEC repair tip)
• Power output transistor TR502 (BU126) keeps failing.
• Raster is missing or dark, sound ok.
• No audio. No picture.
• Dead.
• Poor picture quality, smearing, milkiness, glistening on peak whites or insufficient brightness.
• Reduced vertical size.
• Bend on verticals.
• Unstable frame hold control and constantly needs adjusting, or incorrect frame speed. (20AXMK1 tip from GEC)
• No red, green or blue luminance signal. (GEC - 20AXMK1 information)
• Frame synchronisation poor.
• Frame collapse or intermittent frame collapse. (20AXMK1 tips)
• Synchronisation is missing or intermittently missing.
• Incorrect line speed or unstable control.
• Poor picture quality, smearing, milkiness, glistening on peak white or insufficient brightness.
• No red, green or blue luminance signal.
• Poor picture quality, smearing, milkiness, glistening on peak whites or insufficient brightness.
• Vertical jitter.
• Poor picture quality, smearing, milkiness, glistening peak whites or insufficient brightness.
• Static hum.
• EHT Brushes or arcs.
• Focus problems.
• Synchronisation is missing or lost intermittently.
• Jagged verticals.
• Focus problems.
• Degauss circuitry does not function.
• Striations.
• Ballooning effect.
• Tube heaters do not light up.
• CRT heaters do not light up.
• Static hum. (20AXMK1 GEC repair tip)
• Incorrect line speed or unstable control.
• Line synchronisation is missing or intermittently missing or line hold critical.
• CRT heaters do not light up.
• EHT missing, line timebase ok.
• No audio. No picture. (20AXMK1 GEC repair tip)
• Blue luminance signal is missing.
• Dead.
• EHT brushes or arcs.
• No audio. No picture.
• Frame synchronisation poor.
• Jagged verticals. (20AXMK1 tips)
• Picture appears grainy and sound noisy.
• Line synchronisation is missing, intermittent or line hold critical.
• Line synchronisation missing, intermittently missing or line hold critical. (20AXMK1 tips)
• Jagged verticals.
• Green luminance signal is missing.
• Vertical jitter.
• Horizontal bars move up and down the screen. (20AXMK1 tips)
• Unstable frame hold control and constantly needs adjusting, or incorrect frame speed.
• Brightness fault. (GEC - 20AXMK1 information)
• Frame synchronisation poor.
• Raster is missing or dark, sound ok.
• Incorrect line speed or unstable control.
• Ghosting effect.
• Horizontal bars move up and down the screen.
• Reduced vertical size.
• EHT brushes or arcs.
• Ghosting effect.
• Line synchronisation missing, intermittently missing or line hold critical.
• Reduced vertical size.
• Vertical jitter.
• Frame collapse or intermittent frame collapse.
• Frame collapse or intermittent frame collapse.
• Picture appears grainy and sound noisy.
• Power output transistor TR502 (BU126) keeps failing.
• Degauss circuitry does not function.
• Striations.
• Ballooning effect.
• EHT brushes or arcs.
• No audio. No picture.
• Power output transistor TR502 (BU126) keeps failing.
• Picture appears grainy and sound noisy.
• No audio. No picture. (GEC - 20AXMK1 information)
• When appliance is warm, the verticals at the edge of the picture become distorted.
• Bend on verticals.
• Synchronisation is missing or lost intermittently.
• When appliance is warm, the verticals at the edge of the picture become distorted.
• When appliance is warm, the verticals at the edge of the picture become distorted.
• Focus problems.
• Dead.
• Line synchronisation is missing or intermittently missing or line hold critical.
• Jagged verticals.
• Vertical jitter.
• Focus problems.
• No blue luminance signal.
• EHT brushes or arcs.
• Degauss circuitry does not function.
• Incorrect line speed or unstable control.
• Brightness fault.
• CRT heaters do not light up.
• No audio. No picture.
• Brightness fault.
• EHT is missing, line timebase ok.
• Static hum.
• Raster is blank, sound ok.
• Brightness fault.
• Degauss circuitry does not function.
• Poor picture quality, smearing, milkiness, glistening on peak whites or insufficient brightness.
• Frame synchronisation poor.
• Picture appears grainy and noisy sound.
• Focus problems.
• EHT is missing, line timebase ok.
• Striations.
• Vertical jitter.
• Raster is missing or dark, sound ok.
• Dead.
• Dead.
• When appliance is warm, the verticals at the edge of the picture become distorted.
• Insufficient frame synchronisation. (20AXMK1 GEC repair tip)
• Ghosting effect.
• Reduced vertical size.
• Blue luminance signal is missing.
• No red, green or blue luminance signal.
• Ballooning effect.
• Raster is missing or dark, sound ok. (20AXMK1 tip from GEC)
• Degauss circuitry does not function.
• Bend on verticals.
• Unstable frame hold control and constantly needs adjusting, or incorrect frame speed.
• Ballooning effect.
• Synchronisation is missing or lost intermittently.
• Static hum. (20AXMK1 tip from GEC)
• Degauss circuitry does not function. (20AXMK1 tips)