779910 PHILETTA2540 / HANSEATIC [TV]

• Poor line synchronisation. (extract of circuit diagram attached)
• Spot lights after switching off. (extract of circuit diagram attached)
• Picture only 3cms high.
• For 5 minutes zigzag edges in the picture. (+ extract of circuit diagram)
• Vertical shaking. No synchronisation. (HANSEATIC - 779910 information)
• Distorted picture. OK via SCART . (HANSEATIC - 779910 information)
• Vertical collapse. (extract of circuit diagram attached)
• Appliance runs perfectly, switches to standby then pumps the PSU.
• Humming, ticking. (+ extract of circuit diagram)
• No text, front controls perform wrong task. (with circuit diagram extract)
• No E/W, oscillation wide in narrow field on right side.
• PSU pulsates.
• Hiccups and returns to channel 1. Unable to reset. (+ extract of circuit diagram)
• Intermittently returns to channel 1, accompanied by a sound of arcing around tube base.
• Interference lines when cold but not when warm.
• Poor audio. (extract of circuit diagram attached)
• Zig-Zags edges on picture. (779910 tips)
• F5 Error on sets with satellite RX.
• No synchronisation. when cold. (part of circuit diagram displayed)
• Certain channels drop out in UHF range.
• Protection IC7380 BB panel. (779910 tip from HANSEATIC)
• Vertical striations and shading on left hand side of picture accompanied by smearing. Intermittent loss of line lock.
• In TXT, takes about 60 secs to build up page. Page never quite fills up completely with data, thus looking confusing.
• Corrugated verticals. (extract of circuit diagram attached) (779910 HANSEATIC repair tip)
• "F7" on OSD. No sound. LED flashing. OK after 20 mins. (+ extract of circuit diagram)
• Incorrect characters on the screen.
• How to convert from G90 + SAT RX to standard G90.
• Horizontal picture pulling especially with vertical lines. Fault disappears when warm. (picture attached)
• Horizontal collapse (intermittently).
• Pulsing, rolling with jagged white line at top of screen.
• After approx 30 mins faulty OSD and no function. No start-up furthermore.
• No picture.
• F4 Error with arrows on sets with satellite RX.
• Tuning drifts (intermittently). (+ extract of circuit diagram)
• No picture content for the first ten minutes. White picture with flybacks lines.
• Line tearing at vertical lines from top to bottom in test picture.
• Jumps to channel 1 or switches off itself. (with circuit diagram extract)
• Does not switch to standby.
• No sound and "F7" on OSD, OK after 20 mins.
• Hum in audio. Horizontal lines.
• No line oscillation.
• Light and dark vertical lines on left of picture. TXT does not function. OK when warm. (part of circuit diagram displayed)
• No sound at switch on. Picture is present. "F7" displayed on screen. No RC. Everything OK when warm.
• Dead (intermittently).
• Only part picture can be seen, sound OK. (+ extract of circuit diagram)
• Bright raster. Poor vertical linearity. (picture attached)
• Chopper transistor (BUT11AF) S/C. (picture attached)
• Only one horizontal line at bottom of screen.
• Blue picture. (part of circuit diagram displayed)
• Poor functioning of RC receiver at switch on from standby. RC must be close to IR receiver.
• Intermittently sound mutes and OSG are jumbled.
• The power supply gurgles if the mains voltage is weak. (picture attached)
• Error codes. (picture attached)
• Does not tune properly and will not stop on stations. (with circuit diagram extract)
• PSU failure.
• Squealing from PSU.
• Blocks and wrong OSD indication.
• One colour missing. (+ extract of circuit diagram)
• Cycles on/off. (service info for HANSEATIC -779910)
• F7 error clears after a few minutes. (+ extract of circuit diagram)
• D5770 (ZTK33B) fails repeatedly. No tuning or tuning drifts. (+ extract of circuit diagram)
• Addition of fuse 1670.
• Intermittent audio. (with circuit diagram extract)
• Low HV. intermittently. (part of circuit diagram displayed)
• Light spot after switch off. (extract of circuit diagram attached)
• No audio (intermittently). (+ extract of circuit diagram)
• Does not go to standby via RC; LED on set changes from green to orange (should be red).
• Line output transistor 7545 (BUT11AF) fails after a while.
• Chroma fault in SECAM. (picture attached)
• Set blocks. (part of circuit diagram displayed)
• Page 811 appears by itself and is blocked.
• Picture flares. (extract of circuit diagram attached)
• The output transistor of the power supply is defective. BUT11AF, BUT18AF or 2SC3973B. (extract of circuit diagram attached)
• No audio. No picture. (extract of circuit diagram attached)
• Defective switching transistor in the SOPS supply. (with circuit diagram extract)
• Limited contrast control range. (+ extract of circuit diagram)
• Intermittent standby; loss of signals, colour and contrast. (with circuit diagram extract)
• Thin horizontal black lines in upper picture area. Error is shock sensitive in the beginning, then becomes permanent.
• Low output from power supply.
• Power supply defective. (779910 tips)
• Tripping. (with circuit diagram extract)
• No picture. in the centre.
• Cogging down sides of picture. (+ extract of circuit diagram)
• Shape of picture is wrong. The fault is more evident in text mode. Also thin black horizontal lines. (service info for HANSEATIC -779910)
• "F7" on OSD. No audio and stuck on channel. OK after 20 mins.
• Rattle in sound. (extract of circuit diagram attached)
• If appliance is switched to standby when cold, it starts pumping. Other functions OK.
• No adjustment to low volume. (part of circuit diagram displayed)
• No tuning.
• IC7720 does not function correctly. (with circuit diagram extract) (HANSEATIC - 779910 information)
• No VHF1 and VHF3 function.
• Stops when warm. Display shows F7.
• "F7" displayed on OSD, LED flashes and user controls inoperative. (service info for HANSEATIC -779910)
• Reset after a no. of hours, switches back to programme 1. (779910 tip from HANSEATIC)
• After switching on the appliance functions normally. If colour, brightness or volume setting is selected with the remote control then apart from switching over channels and switching the appliance on and off no function is possible. (HANSEATIC - 779910 information)
• A production change:
• The voltage is too weak. (with circuit diagram extract)
• Flashover on picture tube print. (extract of circuit diagram attached)
• No blue. (part of circuit diagram displayed)
• No teletext. No F7 error. Can still change channels in text mode.
• Snowy picture. No sound. LED flashes alternately green and yellow. No control via user control and RC. After approx. 5 mins operation, functions ok.
• Switches spontaneously to program 1. (part of circuit diagram displayed)
• TS 7625 breaks frequently. (with circuit diagram extract)
• Line transformer crackles.
• Tuning drift or no signals though the green bar moves. (picture attached)
• Line output transformer information.
• Dark picture. (+ extract of circuit diagram)
• No reaction from front controls and RC. Also no switchover possible to HF.
• After operating for approx 1.5 hours the appliance switches to search mode by itself.
• No start-up. Squealing from PSU. (779910 tips)
• Outlines are distorted in the top part of the picture and intermittently no colour.
• Picture is missing, LED displays F4. (picture attached)
• Remote V/S. Green LED goes red. Spurious nonsense on-screen graphics. Goes to standby after running for 30 mins - 2 hrs. Loss of tuning.
• Lines in picture. on the left.
• The raster pulls. (with circuit diagram extract)
• Erratic clock.
• Stuck on channel 8. No front controls or R/C operations. Standby LED flashing. (extract of circuit diagram attached)
• Does not function well. Wrong characters on screen. (+ extract of circuit diagram)
• The mains transistor BUT11 permanently blows at switch on. (part of circuit diagram displayed)
• No function. Rapid loud popping noise with synchronised standby LED flashing.
• The power supply is noisy in standby. (with circuit diagram extract)
• No signal to the collector BUT11AF. (part of circuit diagram displayed)
• No colour. (with circuit diagram extract)
• Intermittent fuse blowing, blows BUT11AF. (with circuit diagram extract)
• F0, UHF and P1 indication after approx 30 mins then no function. (service info for HANSEATIC -779910)
• Erratic functions on satellite RX. (service info for HANSEATIC -779910)
• Light picture content with coloured background.
• No colour (at start-up). (+ extract of circuit diagram)
• Sound crackles and LED flashes green in the same rhythm. (779910 tips)
• Does not stop when sweep tuning. Drifts if manually tuned. (part of circuit diagram displayed)
• Memory loss. (+ extract of circuit diagram)
• When warm there is a raster fault on the left.
• Noise from PSU.
• No horizontal synchronisation. in TXT. (extract of circuit diagram attached)
• PSU shutsdown with popping sound. LEDs flashing.
• Vertical foldover. Flyback lines.
• Faulty TXT. (779910 tips)
• Line lock is incorrect.
• Blocked control. Error F7. LED flashing.
• Incorrect OSD characters.
• Pal/Secam chroma identification problem. (779910 HANSEATIC repair tip)
• Distorted picture. when cold.
• No RC functions. (picture attached)
• Short circuit in the power supply.
• Black dots in the bright-white spots.
• No functions. after a few minutes.
• Breakdown of T7625. (+ extract of circuit diagram)
• Sound is distorted and disappears as the volume is turned up. (+ extract of circuit diagram)
• CDI picture comes through on TXT with G90AE chassis.
• No tuning. Snow in picture. (+ extract of circuit diagram)
• Low contrast. (part of circuit diagram displayed)
• Does not switch on when cold. Strange oscillating noise from PSU. Green LED flashes quickly. Picture appears after a few mins but extremely noisy.
• No audio. Picture OK . (picture attached)
• Raster lines at the top of the picture, approx. 5 cm wide.
• Difficult front control operation.
• Random failure of the BUT11AF chopper transistor. (with circuit diagram extract)
• Blows fuse.
• Useful voltages to check on satellite RX board
• White screen. (picture attached) (service info for HANSEATIC -779910)
• Strange signs in picture or text. EXT 1 and EXT 2.
• Supply voltage cuts out, appliance whistles. (service info for HANSEATIC -779910)
• No functions. (part of circuit diagram displayed)
• Not operational. F7 in picture.
• Popping noise from speakers, only at switch on.
• Fault codes F4 or F7 with no signals and orange LED. (779910 HANSEATIC repair tip)
• Searches for channels continuously. (picture attached)
• Does not tune optimally. (picture attached)
• Shutsdown with motorboating noise after 10 minutes.
• Lines in light areas and letters. Improves when contrast reduced. (with circuit diagram extract)
• Low picture contrast. Cannot be controlled via user control.
• No red.
• Poor tuning. Search sometimes does not stop. Picture shifted and trembles. (part of circuit diagram displayed)
• After tuning the channels cannot be stored. The appliance memorises one channel by itself. (extract of circuit diagram attached)
• Picture jitters.
• After switching on with the on/off switch the Stand by LED comes on for a short time and then goes off again at once. The same thing happens with the remote control.
• Shuts down (after a few minutes). PSU pulsates.
• Excessive vertical and horizontal size. (+ extract of circuit diagram)
• Cycles on/off (intermittently).
• Sometimes remains in standby when switched on with the help of mains switch.
• No TXT. No picture. after a while.
• Blurry picture. Audio OK .
• Hum (interference noise) from speaker in standby. (+ extract of circuit diagram)
• The R3661 resistor is in open circuit. (extract of circuit diagram attached)
• After a few hours there is a slight reduction of brightness. When changing channel manually the display reads F4 or F7. (with circuit diagram extract)
• Black lines in picture, then no picture.
• Over-voltage circuit active. (extract of circuit diagram attached)
• No or poor synchronisation.
• No picture. No sound. No RC function. LED lights up green.
• LED blinks in STANDBY mode. (+ extract of circuit diagram)
• Picture becomes dark from time to time, cannot be adjusted. (picture attached)
• No picture. AV OK . (part of circuit diagram displayed) (779910 tip from HANSEATIC)
• Horizontal jitter. in the centre.
• The BUT11AF is destroyed after some time. (picture attached)
• Mono/stereo display error.
• Horizontally torn picture.
• Tuning drifts. (part of circuit diagram displayed)
• Error codes.
• Dead. (extract of circuit diagram attached)
• Switches back to program 1.
• No switch to AV. EXT1 or EXT2.
• No picture. Blank raster. (with circuit diagram extract) (HANSEATIC - 779910 information)
• Intermittently displaying error code F7.
• Flyback lines. at top.
• Teletext faults. Page 811 appears spontaneously. (extract of circuit diagram attached)
• Faulty OSD. (service info for HANSEATIC -779910)
• No regulation. (part of circuit diagram displayed)
• Ragged picture. Dim display. (extract of circuit diagram attached)
• After working normally for approx 2 hours, the TV blocks. "EX" appears on the screen. The remote control receiver does not function.
• Disable hotel mode.
• Doesn't start, at switch-on LED green, then goes back to standby, doesn't respond to RC.
• Drifts through the tuning, unprogrammable.
• Picture rolls and bounces in the first 5 mins. An approx. 5cm wide vertical line on the left picture edge. After 5 mins. of operation everything OK.
• Displaying error code F7 intermittently. (extract of circuit diagram attached)
• Appliance stuck on programme "1". OSD shows F7. (779910 tip from HANSEATIC)
• Blank raster. TXT OK . (part of circuit diagram displayed)
• No OSD. (+ extract of circuit diagram)
• Tripping. at start-up.
• Fine, dark horizontal lines when warm.
• Purity fault.
• Reduced vertical size. Vertical foldover at top. (extract of circuit diagram attached)
• No vertical deflection. (+ extract of circuit diagram)
• Teletext faults. Set very intermittently shows error F7. (extract of circuit diagram attached) (779910 tips)
• No sound. No channels switching. Error code F7 appears on screen (TXT board).
• Intercarrier-hum. (+ extract of circuit diagram)
• Black horizontal lines in picture.
• Trips few mins after switch on, increasing in speed until popping approx twice per sec. (+ extract of circuit diagram)
• Sizzling/picture distortion. (service info for HANSEATIC -779910)
• Occasional picture foldover at the top on certain programas when changing picture or channel.
• Only noise, otherwise no functions or display.
• +95V is incorrect. (part of circuit diagram displayed)
• Picture darkens slightly with remote control commands having no effect after about 2 hours. Display shows F4 or F7. (extract of circuit diagram attached)
• Dead. Standby LED flashes .
• Noise at the edges of the picture.
• Teletext faults. Characters wrong. (with circuit diagram extract)
• Destroys BUT11 and bridge rectifiers on switch on. (picture attached)
• Crackling/bubbling sound from speaker when switched to standby after a short time. (picture attached)
• Tripping (after start-up). (extract of circuit diagram attached)
• Missing 95V.
• To loop the video through not using circuitry on satellite RX. (HANSEATIC - 779910 information)
• Character error.
• BUT11AF is defective and is destroyed at each start up. (+ extract of circuit diagram)
• Insufficient contrast. When readjusting, brightness is also adjusted. teletext is O.K. (extract of circuit diagram attached)
• Switches off automatically for a short time and restarts with program1. Picture drops out or switches off.
• Codes F4 or F7 with no signals and LED orange.
• No channel storing.
• Dead. LED blinks .
• PSU blows immediately at every switch on.
• Only programme 6 at switch on. F7 on display. No control. No function of keys or RC. (extract of circuit diagram attached)
• When appliance is switched on it jumps to channel 3 then when the appliance is warm it shuts down. (with circuit diagram extract)
• Fluttering noise.
• Only chroma lines in VCR.
• On PB strange symbols or text appears on the screen.
• Dead. Power LED lit . (picture attached)
• Tuned stations change constantly in the upper tuning areas VHF (B III) and UHF.
• Problems with FLOF TXT. Cannot find page 811 whereas in spite of this page is broadcast. TXT header remains on subtitling. (picture attached)
• Trips, plop in speakers.
• Picture becomes narrow, lighter and disappears.
• No sound, F7 error code LED flashes. (with circuit diagram extract)
• No tuning. only on certain channels.
• Display has corrugated verticals. (picture attached)
• Upper part of picture consists of a few lines. (extract of circuit diagram attached)
• Trips with power LED flashing and speaker popping in unison. (with circuit diagram extract)
• Reduced horizontal size.
• No functions. LED blinks . (picture attached)
• The "LE" voltage is less than 100V. (extract of circuit diagram attached) (HANSEATIC - 779910 information)
• Tuning drifts. Poor picture (when cold).
• Switches off by itself.
• Reduced vertical size. (with circuit diagram extract)
• Blank raster. No sound. No OSD. RC LED does not flash when a command is transmitted. (with circuit diagram extract) (779910 HANSEATIC repair tip)
• No or poor operation of RC and front controls. No picture when cold. (extract of circuit diagram attached)
• EHT low and line output transformer makes a fizzing noise. (part of circuit diagram displayed)
• Intermittently strange signs in picture. No function of RC. (+ extract of circuit diagram)
• No horizontal deflection. Standby LED flashes .
• Video signal and sound are missing, raster is blank. (+ extract of circuit diagram)
• No tuning. No display. No RC functions. (picture attached)
• Data lead to microprocessor on main board from satellite RX.
• Lines in picture. (picture attached)
• Line pairing at top half of picture. (extract of circuit diagram attached)
• The voltage of +95V line alters. (part of circuit diagram displayed) (HANSEATIC - 779910 information)
• No picture. OSD OK . (+ extract of circuit diagram)
• Loss of sound. STEREO/MONO indication lit.
• No red in the picture with an RGB input.
• Intermittently F4 appears. Dark picture.
• The remote control and the operation unit shut off after approx.10 min.Later strange symbols appear on the screen. (+ extract of circuit diagram)
• Picture is bowing on edges for couple of minutes.
• F7 upon switch on, or intermittent F7.
• U743 tuner replacement.
• Microprocessor/eprom screening plate.
• Intercarrier buzzing is audible.
• Squealing from PSU. Audio and picture OK . (picture attached)
• Picture and sound are missing, LED flashes at switch on, ok in standby. (service info for HANSEATIC -779910)
• Appliance works perfectly for a few days and then all the components burn out on the primary side of the switching circuit. (part of circuit diagram displayed)
• Standby LED continuously flashing.
• No picture. TXT OK .
• No focus.
• Fine dark horizontal lines on picture after a short time. Picture slowly goes to line tear effect with vertical jitter; intermittent mute sound, then goes to standby.
• Tripping with clicking via speaker. (with circuit diagram extract)
• No start-up. Green LED flashes .
• No synchronisation (intermittently). (779910 tips)
• The appliance will not tune stations higher than 55, the tuning varies. (extract of circuit diagram attached)
• Vertical streaks at the left of the picture which disappear after a while. (with circuit diagram extract)
• No colour in French standard.
• No picture. Audio OK . (extract of circuit diagram attached)
• Intermittently trips. Picture pulses to low width. Reduced height. Raster flashes.
• No synchronisation. (+ extract of circuit diagram)
• No picture. at start-up.
• Wide oscillation in the weak field on the right hand side. (+ extract of circuit diagram)
• Tripping (intermittently). (HANSEATIC - 779910 information)
• Manufacturing error.
• "F7" displayed.
• No tuning search. No channels change. No numbers on display.
• Shuts down. (part of circuit diagram displayed)
• Snowy raster. (picture attached)
• Shuts down. after a while. (779910 tips)
• Switches to program 1. Fault occurs especially at greater brightness. The switch over occurs after vertical line tearing (e.g. in convergence test pattern) or after horizontal lines in normal pictures.
• Stuck in standby.
• Does not respond to commands in first 5 mins.
• No line timebase operation. (part of circuit diagram displayed)