348903 FS937 / HANSEATIC [TV]

• No picture (after a while).
• CRT board.
• No picture. OK via SCART .
• White picture with flyback lines. No sound. Error occurs immediately after start-up or after approx 1 hour. (348903 tip from HANSEATIC)
• No picture. No audio. No display. (part of circuit diagram displayed)
• Power supply transistor T661 is S/C. (+ extract of circuit diagram)
• Loss of picture/sound due to incoming signal.
• 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.
• No sound via aerial. Sound ticking when Vol+/- are pressed. OK via AV.
• Appliance starts, but CRT socket sparks.
• uP blocks after connecting aerial. Display flashes, changes channels or goes into standby. Impossible to control the TV. (with circuit diagram extract)
• Two keys need to be pressed when selecting a programm. (service info for HANSEATIC -348903)
• Stuck in standby. (part of circuit diagram displayed)
• Erratic start-up. (with circuit diagram extract) (HANSEATIC - 348903 information)
• After short operating time it turns itself off. Image becomes for a short while bright. Visible flyback lines. Display operating.
• Snow but no picture. Display shows corresponding channel. works ok in scart.
• No start up of PSU with normal output voltage. Start up OK with R637 at minimum. (extract of circuit diagram attached)
• No stereo reception after replacing the tuner.
• No or intermittent start-up.
• Sound noisy during stereo.
• Clouded display.
• S-shaped distortion in dark parts of picture. (with circuit diagram extract)
• PSU whistles. (picture attached)
• No vertical deflection. (348903 HANSEATIC repair tip)
• Green picture with flyback lines at switch on. Switches off then and immediately on. Sound is present.
• No mono. No STEREO.
• No function. All voltages are too low. Display ok. (with circuit diagram extract)
• Horizontal and vertical jitter, it depends on picture content.
• Low audio.
• Appliance switches off after approx. half an hour. After short breaking period it starts up again. Then everything is repeated.
• Dead.
• Transistor BUT12A is S/C.
• No picture. No sound. Programs can only be adjusted on high channel 21.
• Switches off a few secs after switch on. Picture and sound for a short time at switch on.
• Coloured spots.
• Vertical fault or no picture (blanking) with TDA8170 or TDA8172.
• EHT collapses.
• Switches off, display continues to operate, small vertical line/dot on screen. (with circuit diagram extract)
• Distorted picture during tuner operation. ok during AV.
• PSU does not start correctly. (with circuit diagram extract)
• Power supply doesn't start. Light ticking.
• PSU starts up but pulsates loudly.
• After approx 15 mins the picture still only shows a bright raster.
• No picture or sound. Only high channel S21 on all program sites.
• Sound becomes quieter after approx. 1 hrs. and cannot be turned up.
• No picture. No audio. OSD OK .
• Flyback lines on upper picture edge or blank picture with RGB lines.
• Goes into standby after ten minutes. No sound and pictures when restarting. Deflection functions after few a minutes then stops.
• No HV.
• No TF1, A2 or FR3 but Canal Plus, Arté and M6 are properly tuned in.
• IF plug-in modules 29504-102.04/.05 and 29504-102.07
• BUT 76 fails repeatedly after operating for some time. (HANSEATIC - 348903 information)
• Value of R663 and R666.
• Repeated fail of line transistor T661.
• Switches off after a short time, still only display and sound present.
• 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.
• RC in continuous function (TP650).
• Line tearing ohm some channels when cold. Very strong when AV selected.
• Does not start up. Only channel number on display.
• After approx. 5-10 mins switches to standby. Can be started immediately again with mains switch but not always with RC. (extract of circuit diagram attached)
• Switches to standby, especially if cold. Sometimes it runs for hours. (extract of circuit diagram attached)
• Irregular display at start up.
• Intermittent doule image. Verticals are frayed
• No picture. High voltage present. Picture tube heating works. (extract of circuit diagram attached)
• Line scanning transistor T521 blows. (+ extract of circuit diagram)
• Dark screen (intermittently). Audio OK . (picture attached) (348903 tips)
• No programme locations greater than 9.
• No function. Hiccups only.
• The colour and picture sometimes partially disappear during increased brightness.
• White screen. Flyback lines. Fault occurs intermittently. . (with circuit diagram extract)
• Loss of colours. Light and dark picture with flyback lines.
• Picture is distorted for a few secs. Line tearing and lateral notches. (part of circuit diagram displayed)
• Twittering from the speakers in stand by. (extract of circuit diagram attached)
• Switches off. Display continues to show programme indication. No control with RC.
• 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.
• Rolling picture or loss of picture. Intermittent switching to TXT.
• Dark screen.
• During playback via AV-Scart (various recorders and cassettes), wide stripes in the top part of the picture, shifts and distorts.
• Value of capacitor C521.
• 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. (picture attached)
• No picture. Display OK .
• Changes the combination power/line deflection.
• Attempts to start up. Knocking is audible in loud speaker.
• No picture. Audio OK .
• Reduced vertical size.
• No sound. Ticking from loadspeaker. (service info for HANSEATIC -348903)
• During operation picture becomes dark for fractions of a sec and sound fails. Occurs approx every 3-4hrs.
• Switches to standby after approx 15 mins. Can only be switched on again after 3 mins. (with circuit diagram extract)
• Colour disappears locally when brightness/contrast is high. Picture is distorted.
• 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. (extract of circuit diagram attached)
• Flyback lines. when cold. Shuts down. after a while.
• 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 start-up (intermittently). (extract of circuit diagram attached)
• Distorted audio.
• 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. (348903 HANSEATIC repair tip)
• Does not switch to standby.
• Grey screen. Flyback lines. (extract of circuit diagram attached)
• Trips. (with circuit diagram extract)
• Power supply BUT and fuse blow at switch on.
• When using a scart cable the video text or remote control do not function.
• No raster. after warm-up. Horizontal white line. in the centre.
• Flyback lines (after start-up).
• The top of the picture is misshaped (when rising the raster amplitudes).
• Poor focus.
• No deflection. Programme display is available.
• No picture. Only cross approx. 10cm high in middle of picture. (extract of circuit diagram attached)
• BUT fails repeatedly.
• Faults occasionally occur on the focus spark bridge, due to flash over the picture occasionally goes dark, switches off and skips to TXT. (348903 tip from HANSEATIC)
• White picture with flyback line after approx 5 mins. No sound.
• Display indicates 1 and 00 after switch on with mains switch. Sometimes no picture or sound.
• Blurry picture. No or intermittent picture.
• Does not start up using mains switch. It switches to standby.
• 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)
• Primary power supply dead, only approx. 315V dc. voltage at T661 (ON4314). (part of circuit diagram displayed)
• No synchronisation.
• BUT76A defective after replacement.
• No start up. PSU locked.
• Light flyback lines when cold. Switches off after some time, also when there are no flyback lines. (service info for HANSEATIC -348903)
• Due to flashover on the focus-spark bridge fault occurs occasionally. Occasionally picture turns dark, switches off, jumps to teletext.
• No start up. Hiccups. (picture attached) (service info for HANSEATIC -348903)
• Wavy lines from top to bottom on left side of picture when picture is dark.
• No operation.
• White picture after 15 mins.
• No picture (intermittently). No TXT (intermittently).
• IC U6202B in tuner always fails.
• T661 and fuse 624 fail. No short circuit can be measured. Start up operation is ok. Line mains transformer has already been replaced. (extract of circuit diagram attached)
• Excessive horizontal size.
• Picture fails after some time. Still only a 6cm bluish vertical line. (part of circuit diagram displayed)
• High voltage flashovers in the CRT neck. Picture is too small. (picture attached)
• Unable to control sound. No sound and encoded picture with Canal Plus.
• Incorrect vertical linearity. Picture is pinched at the bottom and elongated at the top.
• No functions. (extract of circuit diagram attached)
• No audio. intermittently.
• The high voltage rises and switches the appliance off. (+ extract of circuit diagram)
• Secam display flashes after start-up. No picture, only a weak wide vertical stripe is visible.
• Deflection module repeatedly failure.
• No start up. At start up slight arcing noise in tube holder. Display PR01 lit and black screen. No sound. (picture attached)
• Picture shifted to the left. (HANSEATIC - 348903 information)
• Intermittent program codes through picture, TXT does not function properly.
• Fuse SI624 and T661 blow at switch on. (with circuit diagram extract)
• Only sound during stereo programmes, or one channel is missing during dual-channel sound.
• Switches to standby (after a while). (extract of circuit diagram attached)
• Slashed picture. (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.
• Hardly visible raster with flyback lines at switch on, then goes dark. Sound present.
• No sound. Channel appears on dual channel
• No start-up. No display. (with circuit diagram extract)
• Rhythmic cracking noise from speaker when operating and in Stand by. Stereo indication switches on and off by itself. (HANSEATIC - 348903 information)
• Distorted picture (after a few minutes).
• Switches off by itself (after start-up).
• Bright vertical stripes in the picture.
• Switches intermittently to standby. Discharge noises from tripler.
• Pincushion distortion.
• Switches to standby. after a few minutes. (extract of circuit diagram attached)
• No start-up from standby with RC.
• HiFi does not work.
• No picture when switched on with mains switch. Display is OK.
• Hiss in standby.
• Horizontal line. (with circuit diagram extract)
• Change in PSU.
• No start up by the On/off switch. Starts up by the RC.
• 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.
• Tube IC 2930407037../45.
• Goes into black and white at each start of sequence when using a camcorder or a VCR.
• E/W fault. Focus problems.
• No audio (via AV). Picture OK .
• TDA8140 overheats. (part of circuit diagram displayed) (348903 tip from HANSEATIC)
• Noise in audio when cold. When is warmer, noise diminuates. (HANSEATIC - 348903 information)
• Appliance will not memorize again. Incorrect control functions. (348903 tips)
• Netzteiltransistor T661 hat Kurzschluss. (part of circuit diagram displayed)
• Vertical shadings on the right side of the picture, clearly visible during dark picture content.
• Switches intermittently from a program site to AV.
• Line tearing. on upper half screen.
• Sometimes appliance goes to standby after switching on with the mains switch.
• No start-up from standby. (348903 tips)
• Difficoult startup. Starts up well if mains switch is hold pressed for a longer time.
• Only switches on after activating mains switch several times. (+ extract of circuit diagram)
• Faulty switching transistor.
• No audio. No picture. PR1 on display.
• Modifications to be carried out in the PSU.
• No picture. Pumping from the loadspeaker. Point is lit in the display
• No channel reception although channel indication present.
• After approx 30 mins appliance switches into standby mode.
• Shuts down. intermittently. No start-up. (with circuit diagram extract)
• Picture- and line synchronisation fail. Picture fails horizontally.
• Unstable picture at top. Power limiter of TDA 3640/IC 655 switches on in top part with bright picture content.
• Dark picture.
• After switching on the appliance high voltage is built up over a short time then appliance fails again. (with circuit diagram extract)
• Dead. Display OK .
• Picture and sound fail after some time. Screen is bright, only flyback lines. As a consequence, beam current limiter switches appliance into standby. (+ extract of circuit diagram)
• No colour after Teletext has been used.
• BUT76A and fuse 800mA fail after approx 3 weeks. Intermittent loss of picture and sound. (extract of circuit diagram attached)
• Lines in picture.
• Switches to standby.
• No picture. No audio. after a while.
• Picture twitches.
• Occasionally line tearing in a horizontal picture range of approx 20cm wide. The fault disappears when the picture content changes. (+ extract of circuit diagram)
• 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.
• Picture fails intermittently. Unsynchronised figures on black screen. Sound OK.
• Switches to standby after 10 mins. Slight hum. Normal switch on after 4 mins, operates for 10 mins etc.
• No STEREO. intermittently.
• Cycles on/off. Picture OK .
• Vertical line. Whistling. after a while.
• Vertically too small, vertical adjustment is influenced by E/W potentiometers.
• Mechanical chirping. (with circuit diagram extract)
• T521 overheats quickly.
• No tuner reception. Noisy picture.
• White screen. Flyback lines. No audio. after warm-up.
• 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. (+ extract of circuit diagram)
• The picture width control fails, therefore an east/west fault occurs. (picture attached) (348903 HANSEATIC repair tip)
• No function. No operating- or high voltage after operating for some time. (extract of circuit diagram attached) (service info for HANSEATIC -348903)
• Shuts down. (part of circuit diagram displayed)
• Does not start or only unwillingly, accompanied by noises in the line power supply. Standby mode perfect. (picture attached)
• Sound interference on at least on channel. Cannot be started with RC
• No picture or sound. Defective display indication. At switch on no high voltage builds up.
• IC2141, IC2161 and IC811 fail.
• Switches to standby (intermittently).
• No mono tone. Stereo ok.
• No E/W correction.
• Distorted picture. (348903 HANSEATIC repair tip)
• Switches to standby after 20 mins.
• 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 sound, stereo-indication does not light up.
• Loud audio. Volume uncontrollable.
• 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. (+ extract of circuit diagram)
• A 10cm high cross appears in the middle. No picture content. (part of circuit diagram displayed)
• When using a descrambler does not process video-in and video-out signal on euro AV bus. (348903 tips)
• After repairing PSU, works for about 20/30 mins then goes into standby. (picture attached)
• Line BU often fails. No function.
• Lateral "notches" of the picture and line tearing in some zones of the picture. (part of circuit diagram displayed)
• Horizontal white line. in the centre. (picture attached)
• During operation +C=20V, +M=11V, voltage for IC676 (+B/)=2V. (+ extract of circuit diagram)
• Hum of sound and picture intermittently. Microphonic effect from the tuner.
• Poor adjustment of E/W and picture width. (with circuit diagram extract)
• In Secam mode colour fails occasionally.
• No picture. Flyback lines. (picture attached)
• No functions. after a while. No HV. (+ extract of circuit diagram)
• PSU pulsates.
• Switches. When reducing the load (remove a module or disconnect audio end stage) appliance runs perfectly. (with circuit diagram extract)
• Comes on for a short time.
• Vertical fault. (service info for HANSEATIC -348903)
• No picture. after a few seconds. Audio OK .
• Approx. 10cm high white cross is weakly visible in the middle of the picture. (picture attached)
• S601 defective, black, T661 S/C. If C at ground of T521 components remain intact (appliance in standby). (extract of circuit diagram attached)
• PSU does not load correctly. PSU produces chirping noises.
• No function. Low chirping in transformer TR665.
• E/W fault. (part of circuit diagram displayed)
• Switches off. Program display shows 1.
• No functions. PSU attempts to start rhythmically.
• Horizontal jitter. Vertical jitter.
• Blows fuse. (extract of circuit diagram attached)
• Switches off after a short operating time. Display remains on screen. (picture attached)
• Knock sensitive.
• No tuning. (+ extract of circuit diagram)
• 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)
• Program sites higher than 9 are blocked.
• Intermittent switching to AV.
• Diode D671 and R671 blown.
• No picture, only snow.
• Colour fault. (348903 tip from HANSEATIC)
• Blurry picture. when cold.
• Mains transistor BUT 56 fails after some time. (+ extract of circuit diagram)
• BUT76A shorts. Power supply IC is ok, power supply diodes ok. Capacitor ok.
• Colour spots during TXT.
• Program 1 to 9 and AV work fine, but higher programs do not appear in the display.
• Dead. Appliance ticks and functions only after approx. 20 mins. (348903 HANSEATIC repair tip)