C121 / LUMINAR [TV]

• Intermittent humming and tripping.
• Flickering LED display/no remote control. (LUMINAR - C121 information)
• Dark picture.
• No picture and frame collapse. Sound OK. (service info for LUMINAR -C121)
• Tripping.
• Stand by LED lights up. At switch on, relay click heard but nothing happens. (LUMINAR - C121 information)
• No functions. Standby LED does not light.
• Humming noise and tripping on and off.
• No start-up.
• Grey colour bars.
• Low gain intermittently.
• Sound ok, but no EHT and only about 1V of drive at the base of the line output transistor Q111.
• No s/v and tripping.
• Loud noises from appliance which affect the sound and/or picture.
• Snow in picture. No tuning.
• Picture goes red intermittently.
• No sound or picture, just motorboating from speaker.
• Tripping. Poor or noisy start up.
• Weak contrast.
• Unable to lock field sync using field hold preset.
• Does not function intermittently.
• Vertical collapse.
• Stores in memory all locations (1-6) have same information stored in them at same time.
• No colour.
• Intermittent colour.
• No picture. Sound OK.
• Picture is unstable and disappears after one min.
• Tunes in ok but stores same info on all 16 progs.
• Appliance turns itself on, standby key not working.
• Goes dead after 5 mins.
• Vertical shaking.
• Power supply is tripping.
• Intermittent red in picture.
• Loss of channel selection and uncontrollable sound when the set has been on for a while.
• Weak and snowy picture when switched on. Does not tune in, only first station stays in memory.
• No picture and sound.
• Teletext problems.
• Slow start-up.
• Teletext colour problems.
• Recycling tripping.
• Red is missing on teletext. (LUMINAR - C121 information)
• Incorrect height. (LUMINAR - C121 information)
• Low A1 voltage.
• Set comes on with blank raster and no channel indicators alight.
• Comes on dark and gradually goes overbright.
• No picture or sound. Burning smell may be present.
• Dead. Ticking/buzzing.
• The volume is intermittent and increases momentarily.
• Field roll. Hold control at one end.
• Channel lights up. H.T. present.
• Field bounce with teletext reception.
• Flyback lines.
• No luminance.
• White screen. Retrace lines.
• Tuner drift, no signals.
• No picture.
• After switching on, the first command using the RCU does not function.
• No vertical deflection.
• F802 blown.
• Motorboating for five mins.
• Dead except whistle.
• Poor frame linearity. (C121 LUMINAR repair tip)
• Bent verticals and ragged picture. (C121 LUMINAR repair tip)
• No picture and sound, dropout.
• Intermittent frame bounce often when first switched on. On-going problem - new frame and synch ICs have been fitted.
• Intermittently dead.
• Line collapse and incorrect width.
• No RC functions.
• Intermittent volume.
• Bent verticals.
• Intermittently picture turns to snow.
• Field collapse. No picture.
• No picture or sound, drop outs.
• Green cast at top quarter of picture, red cast at bottom quarter.
• High brilliance
• Cannot switch TV off using RCU.
• Bright raster, sound O/K.
• No picture. No audio.
• No picture and uncontrollable motorboating and screeching from loudspeaker.
• Appliance will not switch on from standby.
• Bright screen and flyback lines.
• Dead.
• Ragged verticals.
• Loud hum at switch on.
• No tuning.
• On/off button keeps jumping out.
• Lots of crackling, after approx 30 minutes the picture might appear.
• Bright raster with flybacks.
• When the set is switched on the set trips.
• Switches automatically on. Standby key doesn't function.
• At switch on there is lots of crackling; picture takes approx 30 mins to appear.
• Channel lights up. High voltage is present.
• Switches on automatically. Standby key does not function. (LUMINAR - C121 information)
• Small frame.
• Horizontal line.
• Loud hum at switch on
• Contrast problems. (C121 tip from LUMINAR)
• No start-up. Standby OK.
• Picture turns to snow, audio comes up, channel LEDs switch off.
• Picture and sound cut out intermittently. (C121 tip from LUMINAR)
• One colour missing.
• Loud hum at switch on and ragged verticals.
• Intermittently mains fuse blows.
• Raster is bright with flyback lines.
• No picture. Motorboating.
• No start-up from standby.
• Switches to standby.
• Incorrect brightness.
• Defective infra-red transmitter.
• Streaky pictures when captions displayed; dark bands across screen.
• Defective infra-red receiver.
• Intermittent loss of tuning voltage on sweep tuning sets.
• Dull picture or dull single colour.
• Does not switch to standby (only sound disappears) and picture jitters
• Snowy screen. No channel light. No signals. No sound. (LUMINAR - C121 information)
• Field roll, or insufficient height.
• Intermittent frame, picture and or sound.
• Vertical roll.
• Intermittent loss of sync, blank raster, no sound, switches to standby and LED channel display goes off.
• Just noise on picture, no tuning or channel change LED
• Can be tuned perfectly but when memorising all locations (1-16) have memorised the same information.
• No signal.
• No picture, loud hum.
• Trapezoid picture.