7233 HANSEAT25 / NORDMENDE [B/W TV]

• Motor boating when switched on. Lop transistor collector to earth low resistance in circuit.
• Loss of tuning memory at switch on (as for D345).
• Low width
• No power up from RC or normal ON/OFF.
• Buzz on sound with stereo VHS.
• Moire pattern.
• Reduced vertical size.
• Rolling and appliance trips intermittently. (NORDMENDE - 7233 information)
• Teletext black box remains on screen.
• Frame is reduced, foldover or fails.
• Colour is missing on teletext.
• Grey scale fault (TDA3560). (7233 NORDMENDE repair tip)
• Picture is missing, just a green raster with flyback lines.
• 300-600HZ buzz on left hand channel with V/C down.
• Chopper transistor and HT fuse blown.
• During REC image disappears. Menu cannot be displayed or decoder appears in display.
• Dark picture and hum on sound.
• Line tearing with high brightness.
• Contrast problems.
• Dead. TR801 is leaky.
• Reduced height & slow flyback.
• Line "hunting" with tripping after 1 minute.
• Reduced height with foldover and/or field collapse.
• Striations.
• Ghosting.
• Line drive and line oscillator are missing.
• Random channel changing and going to standby.
• Sound ok. Peak white raster, then tripping.
• Noisy line whistle.
• Tripping plus low, growly hum from speaker.
• No FF/REW.
• No text/audio/channel up and down.
• Sound OK, no picture. (7233 tip from NORDMENDE)
• Frame foldover or creeping.
• No sound/vision, channel indicator and EHT OK.
• No picture, only snow on screen.
• Hum and dark picture.
• Picture is missing, raster and sound ok. (NORDMENDE - 7233 information)
• Line hunting with tripping after 1 min.
• Line fault.
• Slightly low width. Linearity is OK.
• Low frequency hum varying with video content.
• Unsteady frame scan, lines may be present.
• Switches off from standby position.
• Crackling sound with volume turned down.
• Tripping.
• RCU transmitter problems.
• Picture is grainy and sound noisy.
• Jagged verticals, most severe down the sides of the picture, effect varies with contrast level.
• Intermittently dead.
• Field instability.
• Trips, usually at switch on.
• Slight line tear, hum with flashing. Tripping intermittently.
• No frame sync.
• No picture. No heater. Sound OK.
• No width or pincushion control.
• Horizontal black lines on screen. (7233 tips)
• Defective line linearity.
• Poor interlace at the centre of screen.
• No line sync after 60 mins.
• Horizontal flag-waving in picture.
• Cuts out intermittently.
• No 119V rail.
• Buzz in audio.
• Numbers 1 to 4 on channel indicator are not working.
• Faulty CRT due to spot burn. (7233 NORDMENDE repair tip)
• When replacing frame output IC. (TDA3652 no longer available).
• No line sync. (NORDMENDE - 7233 information)
• Noise on picture.
• Tripping and line output stage whistling.
• Continuous sweeping (at switch on).
• Vertical roll.
• IC601 (TDA3560) becomes defective after a short time.
• Reduced height to approx 4" scan.
• Blank raster, no sound.
• Vertical jitter.
• White lines at top of screen.
• No picture. BU508A blows.
• Standby LED remains on after switch on.
• No vertical deflection.
• Half inch wise black line across picture with picture instability.
• Green screen.
• Incorrect picture size.
• No TXT (intermittently).
• No picture. Sound OK.
• No raster (eht and sound OK). Usually after fitting focus control.
• Negative picture.
• L/h side picture peak white & flyback lines r/h side ok.
• Rolling & tripping intermittently.
• Width defects.
• Poor field interlace in centre of screen.
• Line interference.
• Poor line synchronisation on pre-recorded tapes.
• Teletext black box stays on screen.
• No synchronisation.
• Relay chatters.
• Teletext lines over the picture on AV channel. (service info for NORDMENDE -7233)
• No picture, sound hum and intermittent tripping.
• Vertical foldover.
• Line cramping and vertical lines on left hand side of screen.
• Picture out of focus, loud hissing from back of set.
• FS1 (2.5aT) blows. (7233 tip from NORDMENDE)
• Failure of the tuning to stop or the LED flashing constantly.
• No audio.
• Intermittent brightness fluctuations. (7233 NORDMENDE repair tip)
• When set switched on, No 1 shows in the channel display but No 1 preset cannot be used to tune in a channel- it has no effect. Instead controls 3 and 7 tune position 1.
• Faint picture with mikly or glistening whites, flashover or poor purity.
• Low 119V or 20V rails.
• Whistling noise on stereo.
• Set tripping as soon as turned on, EHT can be heard to rustle up.
• General field or frame defects.
• Chopper transistor TR701 blows instantly at switch on.
• RC brightness adjustment function does not work. Picture is good but not bright enough as beam limiter appears to function too soon.
• Intermittent snowy picture with loss of sync.
• CRT cuts out, no picture.
• Tripping, rolling and excessive width.
• Picture is displaced to the left.
• Sound and video are missing.
• Incomplete sweep at top of screen. 1 in. wide strip of white horizontal lines at top of screen. (7233 tips)
• Weak contrast.
• Blank raster with flyback lines.
• Synchronisation faults.
• Intermittently blowing mains fuse.
• Text lines at top of screen on video channel. (7233 NORDMENDE repair tip)
• Modification for TDA3654. IC 431-Field Output IC for TX10.
• Black bar moving down screen.
• Frame bounce when cold.
• No line scan, no channel display and no video intermittently.
• Intermittent fast forward/rewind search (22B5 used with 3V43).
• No A1V after changing line output transistor.
• Slight line tearing and hum/flashing intermittent tripping.
• Set trips if line stage distorted. P/Supply runs but TR701 overheats and fails.
• Drifts off tune very occasionally.
• The appliance has flyback lines and A1 pot inoperative.
• Field bounce at switch on. (service info for NORDMENDE -7233)
• Text lines at top of picture.
• Blows BU508A.
• Second LED on bass/treble/balance permanently.
• Snow or ghosting.
• Vertical collapse.
• Line faults.
• Striations on right hand side of screen.
• Field sync bar runs slowly down screen when set warm.
• Intermittently appliance trips with rolling and too much width.
• The appliance changes channels (intermittently).
• No tuning volts.
• Incorrect line frequency.
• Goes into stand-by.
• Goes to standby by itself.
• Noise bars.
• LF hum with connections to stereo VCR. (7233 tip from NORDMENDE)
• Appliance is dead and trips. TR721 cuts out.
• Intermittent bar graph display on at switch on.
• Snow in picture.
• No field sync, no sound. (NORDMENDE - 7233 information)
• No line sync and the line hold control has no effect.
• Will not store tuning. Set may only store 1 or 2 channels.
• Text lines at top.
• Field linearity problems.
• No switch on using RC.
• Picture fades and returns intermittently.
• No RC functions (intermittently).
• Goes into standby at switch on.
• Frame foldover at top and cramping.
• Appliance has search tuning of the single press button type. Locks to each station it comes to automatically. If left switched off, memory dies on channel 1 only.
• 2 large hum bars plus humming on sound.
• Bright raster with flyback lines.
• No line hold.
• Snow on raster.
• Stuck in stand-by.
• Width problems.
• No channel 3 display, otherwise it works perfectly. (7233 tip from NORDMENDE)
• Width is reduced.
• Intermittent no raster or dark picture.
• Faint white vertical line approx 4 inches from the left hand side of screen
• Video heads are dirty or faulty.
• Jagged verticals on bright pictures.
• Frame rolling.
• The appliance has no line, no channel display and no video (intermittent).
• Intermittent field roll and tripping.
• Changes channel by itself, goes to TXT and intermittently powers down.
• When appliance has been switched on the standby LED remains lit.
• Shading in picture.
• Dead. Standby LED flashes at switch on.
• Lines flash on screen, may not affect all channels.
• Picture and CRT heaters are missing, sound and EHT ok.
• Height is reduced to approximately four inches.
• Intermittently appliance trips then breaks down.
• White spots on the picture and loud screeching on sound.
• Line cramp with vertical lines on left hand side of screen.
• Fast tripping. (7233 tip from NORDMENDE)
• Field scan distorted. (NORDMENDE - 7233 information)
• Line output transformer faulty.
• Sound comes on after a few secs.
• Picture bowed at sides. (7233 NORDMENDE repair tip)
• The appliance trips and stops when focus unit is disconnected.
• High pitched buzz when on AV channel.
• Cramping at bottom and rolls after a while.
• Foldover and/or field collapse. Reduced height.
• Faint picture with milky or glisening whites, flashover or poor purity.
• No sync on TXT. Mix TV OK.
• Lines in picture.
• Field bounce, field roll and line jitter.
• No field sync.
• Frame roll-with change of brightness.
• Sound goes loud when channels are changed.
• Trips, but is OK if scan coil plug is disconnected.
• Intermittent field rolling and the line sync jitters, more so from cold.
• Field cramping.
• Poor field interlacement in centre of picture.
• Ballooning effect.
• Inadequate line sync on prerecorded tapes.
• RC operates at random.
• Distorted sound, IC hotter than normal.
• Frame roll when brightness is changed.
• The appliance has flyback lines at top 1" of scan. (NORDMENDE - 7233 information)
• Stuck in standby.
• Intermittently picture drifts approx 15cm towards the right and 2 black bands appear on the left side of the screen which is left with no picture.
• Field scan is non linear.
• Sweeping continuously at switch on.
• Intermittently line, channel display and video are missing.
• Top foldover.
• TR6 blows at switch on.
• Only odd numbers obtainable on channel change.
• Dark lines at top of picture.
• No signal and intermittent sound dropout.
• The set trips and frame collapse in between tripping.
• High pitched whistle intermittently.
• Pulsing power supply. (NORDMENDE - 7233 information)
• Intermittent tripping and line squegging, trips from cold start, line squegging begins at bottom of screen and rolls upwards. Chopper transistor's heatsink hotter than normal.
• Severe frame distortion.
• Drop out during channel change. (7233 tip from NORDMENDE)
• Vertical collapse (intermittently).
• Text lines at top in AV mode. (7233 NORDMENDE repair tip)
• Tripping after 10-20 mins.
• Standby LED on after switch on for approximately 1.5 minutes.
• Low sound as if muted; comes on for instant
• Playback video has sideways jitter.
• Height problems.
• Picture is missing, just green raster with flyback lines. (service info for NORDMENDE -7233)
• Poor interlace when warm.
• Focus problems.
• 3/4 of the picture is blanked out (bottom part).
• Comes out of standby.
• Flyback lines at top of frame.
• Striation on right hand side of screen.
• RC range reduced to 3-4 feet.
• Insufficient purity.
• Blank white raster.
• Battery dead. (service info for NORDMENDE -7233)
• Tripping line output transistor BU208 S/C. When replaced BU208 goes faulty after short while.
• Intermittent hum on sound.
• When replacing frame output IC TDA3652.
• Frame bounce for first five mins.
• Cassette is ejected when in timer mode for longer period of time. Also sometimes ejected when in standby (very rare).
• Loss of vertical sync when warm.
• Various hum bars or distorted picture.
• No picture at switch on.
• Spooks effect.
• Teletext problems.
• Range reduced to about 3 feet.
• Failure of M293 loss of tuning memory. (service info for NORDMENDE -7233)
• Height is reduced with slow flyback lines.
• Field cramp at bottom and rolls after a while. (service info for NORDMENDE -7233)
• Random operations of RC.
• Can be switched on from cold but after about a quarter of an hour it trips on and off a few times then remains off.
• Lower part of picture blanked out.
• Random tripping on channel change. (NORDMENDE - 7233 information)
• Distorted sound at low V/C settings.
• Inadequate line sync with reduced brightness.
• General frame and field defects.
• Spot burn on CRT.
• Cramped frame.
• Frame bounce when warm.
• Appliance trips at random when channels are changed.
• Line noise.
• Retrace lines at top.
• Line ringing then appliance trips.
• CRT problems.
• Intermittent random volume and brightness variations.
• Tuning drifts, patterning.
• Picture and sound are missing, raster ok.
• Hum from speaker when standby selected.
• Slow start-up. (7233 tip from NORDMENDE)
• Foldover at the top of the picture. (NORDMENDE - 7233 information)
• Teletext lines appear at the top of picture.
• Faint intercarrier buzz.
• Intermittent shuts down.
• Trapezoid picture.
• Reduced vertical deflection.
• No picture (intermittently).
• No picture with hum on sound and intermittently trips.
• Intermittently appliance trips with field roll. (7233 tip from NORDMENDE)
• Trips and then stops when scan/coils are disconnected.
• Line linearity problems.
• Trips.
• Non-linear line scan.
• Picture has white spots.
• Bangs and trips when warm.
• Frame reduced/foldover or collapse.
• Intermittent sound and vision.
• After 15 mins picture starts narrowing and then trips out.
• Picture blanked, except for the final inch or so at the right hand side, where the picture content is correct. (NORDMENDE - 7233 information)
• No brightness.
• Width decreases, set starts tripping 150V rail.
• No east/west correction. RV851/852 is functional.
• Poor line sync on pre-recorded tapes. (service info for NORDMENDE -7233)
• Intermittent blowing of line output transistor.
• Tuning does not function (sweep tune LED does not flash) and raster is snowy.
• Teletext message stays on and/or channels change at random.
• Intermittent field bounce.
• After extended operating time makes loud banging noises and picture distortion. Also occurs in aV mode.
• Sideways jitter when PB selected.
• TR701 blowing.
• Set dead lop transistor S/C.
• No control over width and pincushion correction.
• Line oscillator running at wrong frequency.
• TR701 (chopper) trips as soon as appliance is switched on.
• Loss of line lock when starting from cold, also line tearing.
• Sound ok but no EHT or CRT heaters.
• Field collapse. Trips.
• Picture rolling when warm.
• CRT cuts out, no sound.
• The appliance has flyback lines at top 2".
• No colour.
• Black stripes on left hand side of screen.
• Faint picture with milky or glistening whites, flashover or poor purity.
• Raster collapse.
• LED flashing continuously.
• Loud hum on sound and two large hum bars on screen.
• Line synchronisation is missing. (7233 tips)
• Preset volume level gets higher.
• Low audio.
• Rapid destruction of BU208A line output transistor.
• Volume/col varies or goes to standby.
• Intermittently TXT blocks and clock stops.
• Remote brightness not working very well.
• Peak white raster followed by tripping. Sound OK.
• Flyback lines at the top of the picture.
• No TXT. Slight shift to left or OK on mix.
• Bright lines appearing at bottom of picture.
• The appliance blows TR701 (chopper transistor).
• No E/W correction.
• Weak brightness.
• Sound buzz.
• Zig Zag verticals.
• Relay trips on high brightness.
• Tripping on channel change.
• Dead. 320V on chopper.
• No blue in TXT mode. (7233 NORDMENDE repair tip)
• Dead. Channel indicator on.
• No raster. Screen does not come up.
• Flyback lines.
• 1" of field scan.
• Dead.
• Picture is missing, sound and raster correct.
• Blank, snowy raster with mute LED on.
• Intermittent bar graph display at switch-on.
• 50Hz hum at low volume.
• Set dead. No 11.5V on pin 9 of IC801 (TDA2582) chopper control. (NORDMENDE - 7233 information)
• Appliance trips, T721 continuously fails.
• Dead (new stock).
• Set trips every half hour or so.
• When appliance is warm interlace is poor.
• Flyback lines on white screen.
• Frame cramp and rolling at bottom.
• Field sync is intermittent.
• Line tearing at switch on.
• Colour fault on teletext.
• Wavy vertical lines wavy with intermittent field roll, then trips.
• Flyback lines in AV only.
• TR10 blows at switch on.
• Intermittent high pitched whistle.
• Ragged verticals at high brightness settings.
• Line tearing at high brightness.
• Picture moved to left.
• Loses sync after approximately 1 hour.
• Brightness fault.
• No switch on via RC. (7233 NORDMENDE repair tip)
• No picture.
• Intermittently trips and occasionally goes to standby. Ok if scan coils unplugged.
• Teletext message stays on screen.
• Appliance is dead but at switch on the standby LED flashes.
• Intermittent teletext. (7233 tip from NORDMENDE)
• Sound is missing for a few seconds.
• Tripping and reduced width.
• Striations on left hand side. (service info for NORDMENDE -7233)
• Flyback lines at top inch of picture.
• TR10 blows after several minutes.
• Picture is missing, raster and sound correct.
• Lines flash on picture, may not affect all channels.
• Black horizontal lines across the screen.
• Second LEDs for bass, treble and balance permanently on.
• Picture is missing, sound ok.
• Displays AGC off tune errors for first 30 mins after switch on.
• Intermittent noise on sound. (like poor earthing on audio section).
• Concave raster.
• Vertical lines wavy. Intermittent field roll then tripping.
• Height drifts.
• The appliance is tripping (stops when PL4 is unplugged).
• No red in TXT.
• Intermittent loss of CRT heaters.
• The appliance trips off after 10-20 minutes.
• The appliance has flyback lines and AV channel only.
• Shuts down (intermittently).
• Picture interference plus noise on sound.
• Set comes out of standby.
• The appliance drifts off-tune.
• No teletext display apart from the beginnings of a few characters on the extreme left hand side of the screen.
• VOL level increases. (NORDMENDE - 7233 information)
• Line osc freq varies when cold, or high beam current. (service info for NORDMENDE -7233)
• No picture, no Eht no heaters all Ht's slightly low.
• Line hunting and appliance trips after one minute.
• On pre-recorded tapes the line synchronisation is poor.
• The appliance has a white screen with flyback lines.
• No TXT, audio or channel +/- functions.
• Picture gradually grows dark.
• No E-W correction.
• Low contrast, poor field sync.
• BU508 goes short circuit after 2 mins.
• Ripple on verticals with bright scenes.
• Rolling & tripping intermittently.
• Bass, treble and balance second LEDs are on constantly.
• VOL control varies or goes to standby.
• Poor line sync also low brightness.
• Teletext and channel change do not function, sound is missing.
• On teletext or mix, synchronisation is missing. TV ok. (7233 tips)
• Stripes (on receivers fitted with PC1548). (service info for NORDMENDE -7233)
• Intermittent destruction of FS1 and R106.
• Bright raster with flyback lines.
• Channel 1 memory lost at switch on.
• Slight ghost effect on picture.
• Critical field sync. (7233 NORDMENDE repair tip)
• Tuning searching, hum in speaker.
• General frame or field defects.
• Appliance trips intermittently, TR701 fails after several weeks.
• Intermittent loss of CRT heaters.
• TDA3652 no longer available.
• Picture dim and then no picture.
• Low gain on loop aerial.
• No picture or sound snowy raster with mute LED lit all the time.
• No function. TR721 cuts out and the voltage is too high.
• Display fades out after a couple of hours.
• After a few hours picture is missing and CRT heaters are missing.
• No start up from remote or normal on/off.
• Line speed incorrect.
• Comes on in standby mode. Unable to start.
• Flickering picture.
• Line tearing plus intermittent tripping.
• Pincushion distortion.
• Fuse blown to burglar alarm.