348943 FS937 / HANSEATIC [TV]

• Unstable picture at top. Power limiter of TDA 3640/IC 655 switches on in top part with bright picture content.
• No function. No operating- or high voltage after operating for some time. (with circuit diagram extract)
• Value of capacitor C521.
• PSU does not load correctly. PSU produces chirping noises.
• Bright vertical stripes in the picture.
• Line scanning transistor T521 blows. (+ extract of circuit diagram)
• The line output stage is u.s., all the power supply unit voltage is present. (The line output transistor have been changed due to s/c.)
• No mono tone. Stereo ok.
• Hiss in standby.
• Dark screen (intermittently). Audio OK . (part of circuit diagram displayed)
• Line tearing ohm some channels when cold. Very strong when AV selected.
• Dark picture. (348943 tips)
• Poor focus.
• No start-up from standby.
• No picture. Audio OK .
• Twittering from the speakers in stand by. (+ extract of circuit diagram)
• No picture. No audio. OSD OK .
• Light flyback lines when cold. Switches off after some time, also when there are no flyback lines. (service info for HANSEATIC -348943)
• IF plug-in modules 29504-102.04/.05 and 29504-102.07
• After switching on the appliance high voltage is built up over a short time then appliance fails again. (extract of circuit diagram attached)
• Appliance starts, but CRT socket sparks.
• Low audio.
• Switches off completely after switching on with mains switch. After 2-3 repeated attempts to switch on it runs perfectly for days. Fault occurs only once a week approx. (part of circuit diagram displayed)
• Attempts to start up. Knocking is audible in loud speaker.
• Reduced vertical size. (service info for HANSEATIC -348943)
• No picture. Pumping from the loadspeaker. Point is lit in the display
• Picture- and line synchronisation fail. Picture fails horizontally. (348943 tip from HANSEATIC)
• E/W fault. (picture attached)
• No operation. (348943 tips)
• In Secam mode colour fails occasionally.
• No start up. PSU locked.
• Switches off a few secs after switch on. Picture and sound for a short time at switch on.
• The colour and picture sometimes partially disappear during increased brightness.
• No mono. No STEREO.
• After approx. 5-10 mins switches to standby. Can be started immediately again with mains switch but not always with RC. (part of circuit diagram displayed)
• Horizontal picture synchronization fails. Intermittently picture becomes dark and one TXT line is visible. If TXT is switched on and off again, picture OK. Sound OK.
• No audio. intermittently.
• Horizontal line. (with circuit diagram extract)
• Sometimes appliance goes to standby after switching on with the mains switch.
• Power supply doesn't start. Light ticking.
• BUT76A and fuse 800mA fail after approx 3 weeks. Intermittent loss of picture and sound. (extract of circuit diagram attached)
• Green picture with flyback lines at switch on. Switches off then and immediately on. Sound is present.
• Change in PSU.
• Program 1 to 9 and AV work fine, but higher programs do not appear in the display.
• After switching on the appliance it switches off immediately, without the aerial signal the appliance does not switch off.
• Picture narrowed to a line and raster for 5 mins when cold. (picture attached) (348943 tips)
• No TF1, A2 or FR3 but Canal Plus, Arté and M6 are properly tuned in.
• White picture with flyback lines. No sound. Error occurs immediately after start-up or after approx 1 hour.
• Line tearing. on upper half screen.
• Switches. When reducing the load (remove a module or disconnect audio end stage) appliance runs perfectly. (+ extract of circuit diagram)
• Faulty switching transistor.
• Two keys need to be pressed when selecting a programm.
• Only switches on after activating mains switch several times. (part of circuit diagram displayed)
• Picture is distorted for a few secs. Line tearing and lateral notches. (part of circuit diagram displayed)
• HiFi does not work.
• No picture. Only cross approx. 10cm high in middle of picture. (with circuit diagram extract)
• Distorted picture (after a few minutes).
• White screen. Flyback lines. Fault occurs intermittently. . (with circuit diagram extract)
• Dead. Display OK .
• Shuts down. (with circuit diagram extract)
• Excessive horizontal size.
• Switches off after a short time, still only display and sound present.
• Power supply transistor T661 is S/C. (picture attached)
• Does not switch to standby.
• Picture and sound fail after some time. Screen is bright, only flyback lines. As a consequence, beam current limiter switches appliance into standby. (part of circuit diagram displayed)
• Picture disappears after some time. No sound. Program display ok. A cross which is approx. 10cm high appears in the middle. Everything ok if appliance is switched off for several hours. (with circuit diagram extract)
• Slight noise on switch on. Clicking noise appears when operating the volume control. Stereo sound is ok but mono only hums. (348943 tips)
• No picture when switched on with mains switch. Display is OK.
• No channel reception although channel indication present.
• Value of R663 and R666.
• Flyback lines (after start-up). (348943 tips)
• No picture, only snow. (348943 tip from HANSEATIC)
• Blurry picture. when cold.
• Does not start up. Only channel number on display.
• Transistor BUT12A is S/C.
• Deflection module repeatedly failure.
• During playback via AV-Scart (various recorders and cassettes), wide stripes in the top part of the picture, shifts and distorts.
• Distorted picture.
• No E/W correction.
• Repeated fail of line transistor T661.
• Colour disappears locally when brightness/contrast is high. Picture is distorted.
• Netzteiltransistor T661 hat Kurzschluss. (with circuit diagram extract)
• After repairing PSU, works for about 20/30 mins then goes into standby. (picture attached)
• Picture shifted to the left.
• No start up. At start up slight arcing noise in tube holder. Display PR01 lit and black screen. No sound. (picture attached)
• No colour after Teletext has been used.
• Loss of colours. Light and dark picture with flyback lines.
• Pincushion distortion.
• TDA8140 overheats. (picture attached)
• The high voltage rises and switches the appliance off. (+ extract of circuit diagram)
• Erratic start-up. (with circuit diagram extract)
• No vertical deflection.
• Poor adjustment of E/W and picture width. (+ extract of circuit diagram)
• IC2141, IC2161 and IC811 fail.
• Distorted audio.
• Switches to standby (after a while). (+ extract of circuit diagram)
• PSU does not start correctly. (part of circuit diagram displayed)
• Loud audio. Volume uncontrollable.
• Dead. Appliance ticks and functions only after approx. 20 mins.
• After approx 30 mins appliance switches into standby mode.
• Hum of sound and picture intermittently. Microphonic effect from the tuner.
• No picture (intermittently). No TXT (intermittently).
• During operation picture becomes dark for fractions of a sec and sound fails. Occurs approx every 3-4hrs. (service info for HANSEATIC -348943)
• Tube IC 2930407037../45.
• No start-up (intermittently). (extract of circuit diagram attached)
• Stuck in standby. (extract of circuit diagram attached)
• Occasionally line tearing in a horizontal picture range of approx 20cm wide. The fault disappears when the picture content changes. (picture attached)
• Switches to standby. after a few minutes. (extract of circuit diagram attached)
• No sound. Channel appears on dual channel
• After operating for a short time high voltage fails. PSU whistles. Switch appliance off at the mains for 15 mins, appliance functions again. Standby function is ok. Appliance is not temperature sensitive. (extract of circuit diagram attached)
• No sound. Ticking from loadspeaker. (348943 tip from HANSEATIC)
• Approx. 1 cm missing from upper and lower picture edge after start-up in cold condition. E/W error. Picture is slightly blurred. Picture ok after warm up and appliance functions ok.
• EHT collapses. (service info for HANSEATIC -348943)
• Switches to standby after approx 15 mins. Can only be switched on again after 3 mins. (extract of circuit diagram attached)
• No picture (after a while).
• S601 defective, black, T661 S/C. If C at ground of T521 components remain intact (appliance in standby). (picture attached)
• Program sites higher than 9 are blocked.
• Colour fault.
• Slashed picture. (picture attached)
• Dead.
• High voltage flashovers in the CRT neck. Picture is too small. (part of circuit diagram displayed)
• Comes on for a short time.
• Diode D671 and R671 blown.
• Goes into standby after ten minutes. No sound and pictures when restarting. Deflection functions after few a minutes then stops.
• Mechanical chirping. (picture attached)
• A 10cm high cross appears in the middle. No picture content. (picture attached)
• Switches to standby (intermittently).
• No functions. (with circuit diagram extract)
• Incorrect vertical linearity. Picture is pinched at the bottom and elongated at the top.
• Sound noisy during stereo.
• Blows fuse. (+ extract of circuit diagram)
• PSU whistles. (with circuit diagram extract)
• Picture and sound are ok, if appliance is operated with the mains key. If switched off with the RC, picture and sound disappear but display remains on. Can no longer be started with the RC but with the mains switch. (with circuit diagram extract) (348943 tip from HANSEATIC)
• No start up of PSU with normal output voltage. Start up OK with R637 at minimum. (+ extract of circuit diagram)
• Mains transistor BUT 56 fails after some time. (+ extract of circuit diagram)
• No functions. PSU attempts to start rhythmically.
• Sound interference on at least on channel. Cannot be started with RC
• Picture twitches.
• Wavy lines from top to bottom on left side of picture when picture is dark.
• No HV.
• Hiccups. After switching on and off several times hiccupping gets less. Picture appears and sound hums. Picture and sound OK after a while. Snow when connecting cable.
• Fuse SI624 and T661 blow at switch on. (+ extract of circuit diagram) (service info for HANSEATIC -348943)
• BUT76A defective after replacement.
• Faults occasionally occur on the focus spark bridge, due to flash over the picture occasionally goes dark, switches off and skips to TXT.
• Switches off after 15 mins. if switched on via power switch. If it is switched on again after a while, it functions for several mins.
• After short operating time it turns itself off. Image becomes for a short while bright. Visible flyback lines. Display operating.
• Primary power supply dead, only approx. 315V dc. voltage at T661 (ON4314). (picture attached)
• Loss of picture/sound due to incoming signal.
• No function. All voltages are too low. Display ok. (with circuit diagram extract)
• Clouded display. (service info for HANSEATIC -348943)
• Trips. (+ extract of circuit diagram)
• Grey screen. Flyback lines. (+ extract of circuit diagram)
• Vertically too small, vertical adjustment is influenced by E/W potentiometers.
• Modifications to be carried out in the PSU.
• Sound becomes quieter after approx. 1 hrs. and cannot be turned up.
• Noise in audio when cold. When is warmer, noise diminuates.
• When using a descrambler does not process video-in and video-out signal on euro AV bus.
• The top of the picture is misshaped (when rising the raster amplitudes).
• Due to flashover on the focus-spark bridge fault occurs occasionally. Occasionally picture turns dark, switches off, jumps to teletext.
• Switches to standby, especially if cold. Sometimes it runs for hours. (picture attached)
• No tuning. (extract of circuit diagram attached)
• After approx 15 mins flyback lines with no picture content and then goes to standby. Appliance is switched off and after approx 5 mins switches on again then ok. After approx 15 mins same thing happens again.
• Does not start or only unwillingly, accompanied by noises in the line power supply. Standby mode perfect. (picture attached)
• No picture or sound. Only high channel S21 on all program sites.
• Line BU often fails. No function. (348943 tip from HANSEATIC)
• No audio (via AV). Picture OK .
• Hardly visible raster with flyback lines at switch on, then goes dark. Sound present. (348943 tip from HANSEATIC)
• Switches to standby after 20 mins.
• The picture width control fails, therefore an east/west fault occurs. (with circuit diagram extract) (348943 tip from HANSEATIC)
• PSU pulsates.
• Vertical shadings on the right side of the picture, clearly visible during dark picture content.
• Switches off. Display continues to show programme indication. No control with RC.
• No start up. Hiccups. (picture attached)
• BUT76A shorts. Power supply IC is ok, power supply diodes ok. Capacitor ok.
• During operation +C=20V, +M=11V, voltage for IC676 (+B/)=2V. (part of circuit diagram displayed) (service info for HANSEATIC -348943)
• Blurry picture. No or intermittent picture. (348943 HANSEATIC repair tip)
• Vertical line. Whistling. after a while.
• Secam display flashes after start-up. No picture, only a weak wide vertical stripe is visible.
• Irregular display at start up. (348943 tip from HANSEATIC)
• Switches off 30 secs after start up. Beeps when immediately switched on again. At switch on after approx 2 mins, switches off again after 30 secs. (with circuit diagram extract)
• Display indicates 1 and 00 after switch on with mains switch. Sometimes no picture or sound.
• No start-up. No display. (+ extract of circuit diagram)
• T521 overheats quickly.
• E/W fault. Focus problems.
• Horizontal and vertical jitter, it depends on picture content.
• No picture or sound. Defective display indication. At switch on no high voltage builds up.
• No functions. after a while. No HV. (part of circuit diagram displayed)
• Switches intermittently to standby. Discharge noises from tripler.
• RC in continuous function (TP650).
• No deflection. Programme display is available.
• T661 and fuse 624 fail. No short circuit can be measured. Start up operation is ok. Line mains transformer has already been replaced. (with circuit diagram extract)
• Coloured spots.
• IC U6202B in tuner always fails.
• No picture. No audio. after a while. (348943 HANSEATIC repair tip)
• Switches intermittently from a program site to AV.
• Snow but no picture. Display shows corresponding channel. works ok in scart.
• Switches off, display continues to operate, small vertical line/dot on screen. (with circuit diagram extract)
• BUT 76 fails repeatedly after operating for some time.
• Rhythmic cracking noise from speaker when operating and in Stand by. Stereo indication switches on and off by itself.
• No audio. No picture. PR1 on display.
• PSU starts up but pulsates loudly.
• Colour spots during TXT.
• Does not start up using mains switch. It switches to standby.
• Changes the combination power/line deflection.
• Rolling picture or loss of picture. Intermittent switching to TXT. (348943 tip from HANSEATIC)
• Switches off by itself (after start-up).
• Switches to standby.
• CRT board.
• S-shaped distortion in dark parts of picture. (+ extract of circuit diagram)
• White picture after 15 mins.
• Switches off after a short operating time. Display remains on screen. (extract of circuit diagram attached)
• Shuts down. intermittently. No start-up. (with circuit diagram extract)
• No picture. Display OK .
• Difficoult startup. Starts up well if mains switch is hold pressed for a longer time.
• Appliance will not memorize again. Incorrect control functions.
• No start up by the On/off switch. Starts up by the RC.
• No picture. High voltage present. Picture tube heating works. (picture attached)
• Intermittent switching to AV.
• BUT fails repeatedly.
• Picture fails intermittently. Unsynchronised figures on black screen. Sound OK. (348943 HANSEATIC repair tip)
• Goes into black and white at each start of sequence when using a camcorder or a VCR.
• No picture. after a few seconds. Audio OK .
• No function. Hiccups only.
• No or intermittent start-up.
• Intermittent program codes through picture, TXT does not function properly.
• No sound via aerial. Sound ticking when Vol+/- are pressed. OK via AV.
• Horizontal jitter. Vertical jitter.
• No raster. after warm-up. Horizontal white line. in the centre.
• Picture fails after some time. Still only a 6cm bluish vertical line. (+ extract of circuit diagram)
• No picture. OK via SCART .
• Dark screen.
• After approx 15 mins the picture still only shows a bright raster.
• White picture with flyback line after approx 5 mins. No sound.
• Only sound during stereo programmes, or one channel is missing during dual-channel sound.
• No stereo reception after replacing the tuner.
• Approx. 10cm high white cross is weakly visible in the middle of the picture. (with circuit diagram extract)
• Switches off. Program display shows 1.
• When using a scart cable the video text or remote control do not function.
• No picture. No sound. Programs can only be adjusted on high channel 21.
• Power supply BUT and fuse blow at switch on.
• No picture after operating for some time. Channel display is present. No sound. Approx. 10cm large cross in the middle of the picture. It runs again after it has been switched off for several hours. (348943 tips)
• Horizontal white line. in the centre. (part of circuit diagram displayed)
• White screen. Flyback lines. No audio. after warm-up.
• Picture has disappeared after 1 to 2 hours. Sound is still present. If the appliance is switched off and then on again the picture reappears.
• No tuner reception. Noisy picture.
• Intermittent doule image. Verticals are frayed
• Flyback lines. when cold. Shuts down. after a while.
• Unable to control sound. No sound and encoded picture with Canal Plus.
• Lateral "notches" of the picture and line tearing in some zones of the picture. (+ extract of circuit diagram)
• Distorted picture during tuner operation. ok during AV.
• Appliance switches off after approx. half an hour. After short breaking period it starts up again. Then everything is repeated.
• Vertical fault.
• No sound, stereo-indication does not light up.
• No function. Low chirping in transformer TR665.
• Cycles on/off. Picture OK . (service info for HANSEATIC -348943)
• Vertical fault or no picture (blanking) with TDA8170 or TDA8172.
• uP blocks after connecting aerial. Display flashes, changes channels or goes into standby. Impossible to control the TV. (+ extract of circuit diagram) (348943 tip from HANSEATIC)
• No picture. No audio. No display. (+ extract of circuit diagram)
• Knock sensitive.
• No picture. Flyback lines. (extract of circuit diagram attached)
• No programme locations greater than 9.
• No start-up from standby with RC.
• Lines in picture.
• Flyback lines on upper picture edge or blank picture with RGB lines.
• No STEREO. intermittently.
• No synchronisation.
• Switches to standby after 10 mins. Slight hum. Normal switch on after 4 mins, operates for 10 mins etc. (service info for HANSEATIC -348943)