6023 / ULTRA [TV]

• No sync, RCU function or sound. (6023 ULTRA repair tip)
• No mute, standby or volume +/-. Channel change OK.
• Rolling with dark scenes. (service info for ULTRA -6023)
• At switch on crowbar fires and blows fuse.
• No synchronisation.
• No audio.
• Ripple on picture with reduced width. Clears after a while. (ULTRA - 6023 information)
• Terrible field linearity.
• No field sync. Picture rolls.
• Intermittently goes into standby, volume variations and scrambled teletext. (6023 tip from ULTRA)
• No picture. Intermittent LED display.
• Occasionally appliance does not function.
• Contrast control not fully operative.
• Humming on standby. Radio scale light remains on.
• Contrast problems.
• Screeching noise from LOPT and D28 (BY299) S/C.
• Line tearing after 20 mins.
• All HTs high from chopper transformer.
• Line collapse intermittently.
• Set won't start up.
• No line sync at switch on.
• 115V rail takes anything up to 5 mins. to occur.
• Appliance does not function; 115V is too low and fuse FS1 blows after a short time. (6023 tips)
• Black lines across top 1/3 spreading as set warms. (6023 tip from ULTRA)
• RC works when a few feet away only.
• Line twitching.
• Blows mains fuse.
• High pitched whistle from left hand loud speaker.
• Shading in picture.
• Bent verticals.
• Poor line sync.
• No vision or sound. Incorrect LED display, no RCU functions.
• Intermittently goes into standby or TXT. (6023 tips)
• Tuning comes back after being off tune for first 5-10 minutes at switch on.
• Tuning fault (channel 1 memory has disappeared).
• The appliance has a dark picture.
• Insufficient purity.
• Set will not come out of standby.
• Frame foldover or creeping.
• Picture pulsating and changing colours.
• Displays AGC off tune errors for first 30 mins after switch on.
• Standby LED stays on.
• Gain is low.
• Will not tune below CH28 and drifts slightly with no affect.
• Line lock is lost on all but video channel.
• No standby via RC. LED OK. (6023 ULTRA repair tip)
• Appliance is dead, just low ticking.
• Changes channels at random and goes into standby. (6023 tips)
• Field collapse. No sound or brightness.
• No manual channel change. OK on RCU. (6023 ULTRA repair tip)
• Only lower half of text correct.
• LED shows 88.
• No manual or remote channel change, mute light on.
• Mains voltage hum: defective scanning, dirty. Birgit?? Lynn, I don't really know what is dirty. Could it be the degauss coil?
• Volume varies.
• Tuning drift. Does not tune low frequency channels.
• Width problems.
• Height drifts.
• Intermittently dead. Slight tripping and video fault.
• Intermittent graphics on display.
• Sound on vision effect.
• Width defects.
• Black smearing on peak whites.
• No sound (R156 burnt out is open circuit).
• Line tearing varies with level of brightness and contrast.
• Line output and driver transistors blown up.
• Distorted sound right channel (mono or SS).
• No RC functions. Manual OK if RC lead disconnected.
• CRT problems.
• No standby picture control.
• No RC functions.
• Blows TR66 and mains fuse intermittently.
• No output from IC1807.
• Horizontal black lines on screen. (6023 tips)
• Goes into standby or LED reads incorrect.
• Vertical jitter. (6023 tip from ULTRA)
• Field cramping.
• Frame fold over at top of screen with bright line across middle of screen.
• Smearing in picture.
• No picture or intermittent picture when hot.
• Line sync drift on TXT only.
• No frame sync.
• Intermittently dead.
• Teletext message stays on and/or channels change at random.
• Goes into standby every 10 mins.
• No RC functions after 30 mins.
• Cramped frame.
• Mute LED on.
• Grey scale fault (TDA3560) CRT trouble.
• Intermittent on/standby. Remains on Ch8 with mute LED on.
• Picture flutters at certain brightness and control levels.
• No power supply output.
• Tuning drifts.
• PSU only starts intermittently. Sometimes it starts once a day but not in successive occasions.
• Field roll (off air).
• Black lines at top 1/3 increasing as set warms up.
• Dead. Channel indicator OK.
• Stations can be searched for and found but not memorised.
• Colour fault on teletext.
• Low line frequency.
• Stiations.
• Difficult line lock from cold. Line pulls.
• Bent verticals and whistle.
• Insufficient blue.
• Appliance intermittently pulses off then on again, after running it for several hours the fault becomes more frequent.
• Lines flash on picture, may not affect all channels.
• Only min or max width control.
• Set intermittently fails to start up or goes off at random.
• Poor sync when warm. (6023 tip from ULTRA)
• Tuning drifts, patterning. (6023 tips)
• AGC overload CH2 only.
• No operation (intermittently).
• Appliance remains on programme 8. (6023 tips)
• Flyback lines.
• No standby if switched off/on from mains socket.
• Line frequency appears on part of screen, when cold.
• Picture is small.
• Brightness fault.
• When replacing frame output IC. (TDA3652 is no longer available.
• Line lock lost at switch on and when changing channels. No signals.
• The sound is ok, no conductor.
• No audio.
• No sync. Sound muted.
• Tuning fault (audio mute and channel change with the previous/following key fails).
• Colour is missing on teletext. (service info for ULTRA -6023)
• Dead. LEDs lit.
• Picture disappears intermittently.
• Set will not start.
• No RCU functions.
• When sound mute LED is on, no channel display/RCU functions.
• Humming.
• Line collapse after a few hours.
• No TV or radio. Clock OK.
• Green flyback lines at the bottom of screen.
• Line pulling during warm up.
• Picture is grainy and sound noisy.
• No RCU functions. Manual functions OK. (6023 tips)
• Standby light flashing when switched on, then appliance goes dead.
• Low contrast/weak picture and weak field sync. Colour OK. (6023 tips)
• Contrast control does not function correctly.
• Low brightness.
• Reduction of field scan to 2-3 inches.
• Blank raster, sound OK.
• Appliance does not function. Mains fuse blows.
• After a few hours the line collapses.
• Flyback lines at top 1in.
• Excessive EHT damaged IC55 (TDA1170S).
• Squealing noise from chopper Tx. (6023 tip from ULTRA)
• Vertical collapse (intermittently).
• Buzz in audio.
• No colour.
• Will not start.
• RCU does not control volume, contrast, colour or brightness.
• No LED display.
• Contrast control not working.
• Pattern on TXT.
• IC101 (SAA5012) repeatedly faulty.
• No TXT. Picture remains and is displaced to left.
• Line faults.
• Amplification is too weak.
• Low numbered channels cannot be stored.
• Defective line linearity.
• No start-up. after warm-up.
• Bright picture with flyback lines.
• No picture. No audio. Raster OK . (6023 tips)
• Stuck in standby. Receiver ticking.
• No remote function after 30 minutes. (6023 tips)
• No line drive.
• Slow to come on.
• No line sync.
• Blows fuse. Line output transformer is noisy then fuse blows again. (6023 ULTRA repair tip)
• Hum from set. (6023 tip from ULTRA)
• Relay chatters.
• No RC functions except for step up and down buttons.
• No sound, no channel change.
• Failure of TR10.
• Intermittent low gain.
• Reduced vertical size.
• Lines flash on picture, may only affect some channels. (service info for ULTRA -6023)
• Buzz on sound but only in the standby position.
• Sound blares/brightness and colour varies.
• No channel storing.
• Patterning on all channels.
• Clock and radio only, no TV. (ULTRA - 6023 information)
• Radio and TV do not work.
• The appliance goes into standby intermittent if channel change is selected. (service info for ULTRA -6023)
• Picture breaks up with change of picture content.
• 115V HT rail reads high.
• IC101 (SAA5012) repeatedly fails on PC1515.
• Field foldover at top with reduced width.
• No picture blank out on teletext.
• Low contrast. (ULTRA - 6023 information)
• One colour is missing or excessive.
• Corrupted TXT. Displaced to left hand side.
• Line linearity problems. (service info for ULTRA -6023)
• Intermittent cuts out of all voltages except 12V.
• No picture or sound. LEDs lit.
• Intermittent RCU functions.
• Appliance is dead, HT voltage at approximately half. Channel indicator ok.
• Line collapses intermittently.
• Tuning fault (IC901 loses the memory after 1 week).
• No picture. Sound OK. (6023 tip from ULTRA)
• Blows line output transistors at switch-on.
• Trapezoid picture.
• Dead. Slight ticking noise.
• Intermittent loss of sound and raster. (6023 tips)
• Intermittent remote control function eg. no colour excessive.
• E/W fault.
• Low h.t. (ULTRA - 6023 information)
• Shuts down after a few mins.
• Flyback lines at bottom of screen, increasing in size over bottom third. Lines are always green.
• No sound and mute light glowing slightly.
• Appliance and LED fades at switch on. (ULTRA - 6023 information)
• Vertical fault.
• No E-W correction.
• No AV on channel 8 and 9. OK AV on channel 1-7.
• Cracks, crackling or sizzling, possibly with fine white lines.
• Poor sync lock when warm (approx 10 mins after switch on). If channel changed, line sync sometimes pulls in ok but at other times, slips through with field sync.
• Width is reduced and East-West correction is poor.
• Poor or no RCU operation at close range.
• No red or red band at top of picture.
• No picture, no Eht no heaters all Ht's slightly low. (service info for ULTRA -6023)
• Intermittently when the appliance is warm the RCU does not function.
• No scan.
• Drop out on TXT.
• Frame collapses, total collapse at bottom and half scan at top,can be intermittent.
• TR66 and mains fuse blown intermittently.
• Negative picture.
• Zig Zag verticals.
• Very faint sound.
• Black fuse.
• The appliance does not turn on from standby and then sticks on channel 1.
• No audio. LED is green.
• Ghosting effect.
• Goes into standby or intermittently changes channel.
• Picture narrowing from the sides. (6023 ULTRA repair tip)
• Loss of picture after 10 mins.
• No picture when cold.
• Synchronisation faults.
• EHT is excessive, IC55 (TDEA1170S) is damaged.
• Line output transistor TR68 blown.
• Picture flutters when various brightness and contrast levels selected.
• Grainy picture.
• Hanover bars and incorrect colour.
• IC601 (TDA3560) becomes defective after a short time.
• No picture and severe hum.
• Small frame. (6023 tips)
• Very bad line pairing top and bottom.
• Smearing on peak whites. (6023 tips)
• No or weak colour.
• Line frequency drifting.
• Intermittently dead then permanently dead.
• Comes on in standby.
• When replacing frame output IC, TDA 3652, no longer available.
• No width or pin cushion control. (service info for ULTRA -6023)
• Colour on teletext is missing.
• Blurry picture.
• No AV CH8.
• Dark picture.
• The line control transistor T9062V TR67 has a short circuit and mutilates the safety resistor R222 (collector circuit). (6023 tips)
• No fastext functions.
• Line appears to break-up with bright blue picture.
• Goes to standby when channel change selected intermittently.
• No RC. Stuck on channel.
• Blank raster, no sound preceded by arcing.
• Moire pattern.
• Incorrect LED eg. 11 for 1 or 22 for 2.
• Intermittent line collapse then fades off.
• Intermittent picture and sound; similar to tuner fault. (service info for ULTRA -6023)
• Pincushion distortion.
• Uncontrollable sound high.
• No picture or sound. Channel indicators OK. (6023 tips)
• Intermittent poor grey scale then video goes off.
• Intermittently destroys TR8.
• No standby from remote (LED lights).
• After approximately 20 minutes line tearing occurs.
• RCU transmitter problems.
• 1.6A mains fuse blowing.
• No function of RC during standby. Stays on channel 1.
• Teletext problems.
• Line drift.
• Field hold critical.
• Line hold out of phase lock.
• Poor picture focus.
• No picture, no sound. Low frequency popping noise.
• Over volts surge at switch on.
• Intermittent field sync.
• Blowing mains fuse start up IC57 and chopper transistor TR62.
• Does not switch to standby.
• Intermittently blows chopper transistors.
• No field sync and no sound.
• Picture shifted to left hand side by about 1/3.
• No functions, power supply is working.
• No functions. Very dark.
• Unsteady frame scan, lines may be present.
• Ballooning effect.
• Picture unstable with patterning.
• Battery dead.
• Faulty line sync. (6023 tip from ULTRA)
• Teletext message stays on screen.
• Intermittently 119V rail varies.
• During monochrome transmissions, colour breaks through.
• Insufficient height and width.
• Appliance is slow to start up and the picture pulses.
• Blank raster, standby LED on display shows 8, 88 or 888.
• Reduced horizontal size. (6023 tip from ULTRA)
• Picture offset to the right hand side.
• Picture shifted to the left.
• Low gain.
• Ringing on verticals.
• Brightness pulsating.
• Speaker problems.
• Very weak vision with little or no sync.
• No channel indication. No tuning.
• Intermittent black fuse.
• Poor field sync with computers.
• Snow in picture. No channel display. (6023 tip from ULTRA)
• When appliance is warm synchronisation is weak.
• Occasionally RCU function has no colour or too much colour.
• No vertical deflection.
• Line synchronisation is missing.
• Contrast control is open circuit (burnt).
• Reduced picture with screeching noise. (6023 tips)
• Blows TR10 at switch-on.
• Arcing then blank raster.
• RCU does not function, remains on channel. (6023 ULTRA repair tip)
• Will not come on if switched back on while still warm.
• Blowing field output IC.
• Weak contrast. (6023 tips)
• Thin lines across screen.
• Solenoid operates approx about 1 min.
• Picture collapses.
• Vertical roll.
• No colour.
• Green looking faces.
• Sound mute LED on. No channel display or RC function.
• Blank screen in TXT mode and only black graphics in mix mode.
• Very intermittent failure to start up (works normally for days or even weeks).
• Incorrect picture size.
• Focus problems.
• Remote control does not work from standby, stays on channel one.
• Reduced vertical and horizontal size.
• Vertical collapse.
• Comes up slowly with picture pulsating.
• Intermittent HT (135V).
• No RCU. No tuning.
• Solenoid operates after about 1 minute.
• Offset picture to the right. (extract of circuit diagram attached)
• HT and LT low. (6023 tip from ULTRA)
• Lines flash on picture, may be affect all channels. (6023 ULTRA repair tip)
• Intermittent colour.
• Interruptions.
• One colour poor, others ok.
• Dead. High pitch whistle.
• Frame rolling.
• Excessive readings on all HT supplies from chopper transformer.
• Dead.
• IC57 and TR62 blown.
• Incorrect line speed. AV channels OK on prerecorded tapes.
• Field collapse, no sound and reduced width.
• Low gain.
• Striations down left hand side.
• Stuck on programme 8.
• When appliance is switched on the mains fuse blows.
• Teletext black box stays on screen.
• Beam sensing fault.
• At switch on line synchronisation is missing. (part of circuit diagram displayed)
• No TXT on some channels.
• No functions.
• Intermittent start up then tripping with ticking.
• Relay clicking over. No LED or EHT.
• Poor field sync with computers.
• Pincushion distortion with brightness fault.
• Low audio.
• Intermittent crackle on left hand channel and plop when sound is muted.
• Contrast control O/C. (6023 ULTRA repair tip)
• Will not come out of standby. (PC1044)
• No function.
• Interference from fluorescent light.
• No or weak signal.
• Green flyback lines at bottom of screen.
• Incorrect line speed. Intermittently OK when switched to AV channel and back again.
• Voltages from chopper transformer are too high.
• No sound or picture, channel indicator lit, high tension is normal value.
• No picture just lines.
• Picture blacks out to white raster.
• Field jitter. Intermittent colour. No TXT.
• Stuck in standby.
• HT supply is high.
• Does not change channels.
• Picture is missing, just a green raster with flyback lines.
• No picture. Radio sound on all channels.
• After heating up, the timer lock is very weak. If you change channels, the line synchronisation is occasionally correct but it goes wrong in relation to the frame synchronisation.
• No TXT.
• Width control gives only maximum or minimum width. (6023 tip from ULTRA)
• Line frequency incorrect.
• Noise bars across picture.
• Appliance switches off and back on. Fault diminuates after a few hours.
• Dark picture. No sound. Stuck in mute. No RC functions.
• Poor picture, lack of contrast.
• Non-linear field scan.
• Field foldover at top half of scan.
• No sound or raster (low frequency popping noise).
• No manual functions. RCU functions OK.
• In standby when switched on or audio at maximum.
• Picture and sound are missing, raster ok.
• No TXT. Page number only. (6023 tips)
• Frame bounce when cold.
• Poor function.
• Ticking noise in standby.
• Colour fault.
• After 30 mins, set goes into standby. Relay chattering.
• Intermittent roll when hot. (service info for ULTRA -6023)
• Black lines at top of screen, increasing when warm.
• Destroys TR8. (ULTRA - 6023 information)
• Snow or ghosting. (service info for ULTRA -6023)
• When pressing buttons 1 to 5 the channels activated are 5 to 8.
• No picture, no sound. Standby LED on.
• No tuning.
• Blows fuse. Screeching noise from LOPT prior to blowing fuse.
• Trips. Hum from speaker.
• No audio (intermittently).
• Appliance hums (mechanically).
• Screeching noise from PSU. Ripple effect on screen.
• Field linearity is poor.
• No sync on TXT.
• Intermittent channel change. After channel change red LED is lit for a while.
• Goes to standby a few times.
• No line/field sync, no sound (muted) and no TXT.
• Height problems.
• Distorted audio.
• No picture at switch on.
• Blank raster.
• No picture.
• Volume fault.
• RC control effected by fluorescent light.
• Field collapse. No sound, no LEDs lit.
• Destruction of chopper transistor TR62.
• The appliance blows line output transistor at switch on.
• Starts in standby and squeals.
• No RCU function, no front control function.
• Line twitch.
• No remote stuck on channel 8/6. (6023 tips)
• Low HT when warm. (6023 tips)
• Line drifts off frequency. (service info for ULTRA -6023)
• Picture interference plus noise on sound.
• Line pairing at top & bottom of screen.
• Picture blanked out on TXT.
• (Pg 1 of 2) Dead.
• Intermittent fault ,no manual or remote channel change and only the mute light on.
• Stuck in standby via RC. Locked on CH1.
• Wrong channel display.
• Vertical foldover.
• Field jitter with black lines across picture.
• Striation effect.
• No remote functions step up/down button only.
• Picture is missing, raster and sound correct. (6023 tips)
• General frame or field defects.
• 115V rail high (137V) bent verticals/ whistle.
• Black horizontal lines across the screen.
• Red looks fluorescent, other colours appear weak.
• No RCU and no functions without remote lead removed.
• Radio and TV are dead.
• Intermittent strat-up, then trips with ticking noise.
• Line synchronisation is weak and does not lock when cold.
• Enter service mode.
• No TXT (intermittently).
• Fuse blowing L65 hot 115V high.
• Trips.
• Blowing BU508 at switch-on.
• Picture shifted to right with a black band down left hand side.
• No RC functions (intermittently).
• Intermittently dead. When OK intermittent sound mute and channel change.
• TDA1170S field chip is U/S.
• Picture is missing, sound ok.
• Stereo LED permanently on. (6023 ULTRA repair tip)
• Field linearity problems. (6023 tips)
• Picture disturbance with change of picture content.
• Picture is very noisy.
• Sound blasts out. Colour and brightness varies.
• Sound OK but no line.
• Distorted field scan.
• No picture or picture flashing.
• Sound is excessive and cannot be controlled. Remote volume changes the brightness.
• Blank screen with no RCU functions. (ULTRA - 6023 information)
• Teletext drop out on one or two channels.
• Small picture and screeching, blows VT68.
• Various hum bars or distorted picture.
• Noise bars.
• Sound on vision. (service info for ULTRA -6023)
• No switching to standby with RC (LED lit).
• Excessively bright raster.
• Lines flashing on picture, may not affect all channels.
• F51 blown intermittently.
• Appliance is slow to come on, about 10 seconds.
• Colour is missing or not correct.
• Focus out.