63NA1048 / SBR [TV]

• Saw-toothed picture at top.
• Random sound muting. Sound mute is only deactivated when RC is used or front panel controls are pressed. (part of circuit diagram displayed)
• Noise in audio. on the left.
• Does not start up. LED remains red and a slight buzz can be heard.
• Switches off by itself. LED blinks .
• Unable to change all options in SERVICE mode at same time.
• Switches off badly, spot on screen when switching off. (part of circuit diagram displayed)
• Transistors 7502 and 7503 become abnormally hot.
• No channel storing.
• No power.
• Unstable TXT. Symptom mainly appears on weak channels. (picture attached) (63NA1048 SBR repair tip)
• No SECAM channel adjustment possible. PAL correct. Choice of system does not appear in the menu and TXT displayed at the bottom of the screen on the left. (with circuit diagram extract)
• Bright colours.
• No picture. No TXT. Audio OK .
• Picture visible at first for approx 5 secs, then grey background with flyback lines.
• Only UHF reception.
• Adjusting the VG2.
• No picture. OSD OK. Picture available but no synchronisation via scart socket.
• Excessive horizontal size. Shuts down. after a few hours. LED blinks .
• Horizontal line.
• Dark picture. Poor colour.
• Horizontal size varies. depending on picture content. (extract of circuit diagram attached)
• No functions. (+ extract of circuit diagram) (63NA1048 SBR repair tip)
• No shutdown with RC.
• Does not shut down. (+ extract of circuit diagram)
• Picture jumps vertically.
• Trips. Green LED flashes . (63NA1048 tips)
• No sound after repair. (63NA1048 tip from SBR)
• Line output transistor fails repeatedly. (63NA1048 tip from SBR)
• No start-up. LED blinks . (SBR - 63NA1048 information)
• Set is humming. (extract of circuit diagram attached)
• No start up. LED switches from red to green constantly.
• No TXT.
• Does not switch back from HOTEL mode.
• No picture, sound or standby. EHT causes a clicking noise in loudspeakers. Checking with France for claquements (picture attached)
• When switched on from standby via RC, LED power/standby indicator changes from red to green. Green flashes with no picture and no sound.
• Tripping. (SBR - 63NA1048 information)
• CNR50 supply switches off.
• Switches to protection mode.
• Lines in picture. on upper half screen. (service info for SBR -63NA1048)
• No picture synchro and noise via SCART socket.
• Incomplete service menu. After calling up the service menu only lines B and C appear.
• Adjusting black line matrix.
• Intermittent green LED.
• Primary PSU doesn't function.
• Screen displays S. Unable to exit SERVICE mode. (part of circuit diagram displayed)
• Dead. Tapping power supply. (service info for SBR -63NA1048)
• Picture disappears for a few secs. Dark screen with brief sound. (part of circuit diagram displayed)
• Snow and hatching in the tuner and in scart. Sound ok.
• Operation blocks after an extended operating time. LED flashes (internal ROM error).
• Sound mute on cable network or VCR. (with circuit diagram extract)
• No front panel function.
• Dead. Standby LED flashes . (part of circuit diagram displayed)
• IC7614 blows again immediately due to a bang. (+ extract of circuit diagram) (service info for SBR -63NA1048)
• Reduced vertical deflection. (63NA1048 SBR repair tip)
• Front panel commands are blocked. No INSTALL menu.
• No picture (intermittently). Audio OK .
• No audio. via tuner. Searches for channels continuously.
• When receiving a transmission in Secam, there is a purple bar and during reception in Pal the bar turns grey. (with circuit diagram extract) (service info for SBR -63NA1048)
• Switches to protection mode. intermittently. (picture attached)
• Crossing horizontal lines.
• Low audio. (picture attached) (63NA1048 SBR repair tip)
• Line output transistor (BU508) short-circuits repeatedly.
• Error codes.
• Curtain effect on left side with RGB input.
• Automatical switch on/off mute function. Tripping.
• Whistling LOT. Discharge is audible. Loudness depends on picture.
• No picture. Dark screen. No RGB display.
• E/W fault. (picture attached)
• Some channels disappear and reappear when zapping.
• E/W correction circuit: Modifications to reduce overvoltage on E/W transistor. (63NA1048 tips)
• Crystal 6MHZ, MR5 software.
• Low contrast (intermittently).
• White screen.
• Deflection BU fails immediately after switch on. High voltage tries to build up for a short time then S/C of BU.
• Line tearing in the top part. Vertical lines are bent. Unstable horizontal synchronisation.
• Low contrast. (part of circuit diagram displayed)
• Changing option codes.
• No VHF and "ER NICAM" appears at the bottom of the screen.
• No OSD.
• Bent horizontal lines at top and bottom of the picture. (63NA1048 tips)
• Switches off after approx. 30 mins. Red LED flashes.
• No start voltage on pin 7 and 8 of IC7600. (+ extract of circuit diagram)
• Keyboard blocked. (63NA1048 SBR repair tip)
• No audio (after warm-up). LED blinks . (extract of circuit diagram attached)
• Functioning of FORCED MUTE. (SBR - 63NA1048 information)
• Switches off by itself. after a while.
• Reduced volume and tinny sound without lower tones. (extract of circuit diagram attached)
• Picture folds down on top. Thin stripe is slightly visible in picture centre.
• Coloured lines. (with circuit diagram extract)
• Brightness varies.
• No picture. when cold.
• Enable Hotel mode. Disable hotel mode.
• No picture. No sound (no start-up voltage on CNR50). (picture attached)
• Stripes on upper picture edge. Picture folds down over and over.
• No power supply at pins 13 and 21 of IC (TDA2549) (IF). Sound present via scart.
• Protection mode activated.
• No green.
• Cogged vertical lines on the top of picture.
• Intermittently dead. Shuts down. intermittently. (extract of circuit diagram attached) (63NA1048 tips)
• Distorted picture.
• Green LED flashes, poor raster.
• Wavy picture. on upper half screen.
• Vertical amplitude too large and vertical lines are distorted.
• Horizontal stripe.
• PSU pulsates.
• New uP IC7708.
• Switches to protection mode. LED blinks . (+ extract of circuit diagram)
• Colour tearing.
• Power supply goes from 148V to 80V and/or power supply BUT blows.
• No tuning. (service info for SBR -63NA1048)
• Picture amplitude too high at the beginning. PSU cannot be switched on but a large beam spot appears. (63NA1048 SBR repair tip)
• Thump from speaker then trips at switch on. (picture attached) (service info for SBR -63NA1048)
• No start-up. intermittently. LED blinks .
• Red, too wide and displaced.
• No VCR sound on phono socket. Sound/picture signal of the last selected TV program remains on the phono outputs and the SCART output pins. Sound only from internal speakers played back via SCART, VCR or other AV source.
• LED flashes.
• The NICAM option remains on.
• Line output transistor S/C, intermittently.
• Bright line in the middle of the picture. (picture attached)
• Ticking noise.
• Red picture. intermittently. Knock sensitive.
• Vertical collapse.
• Store PP-adjustment MR5.
• No raster. when changing channels. (with circuit diagram extract)
• No picture and no sound. Line end transistor has a complete s/c. Dry joint cannot be located.
• No switch on or standby on front panel. Regular pulse noise in HT.
• Reduced horizontal size. (63NA1048 tip from SBR)
• Vertical jitter. in TXT.
• Defective E/W transistor T7533. (+ extract of circuit diagram)
• Hum in standby. (picture attached)
• Noise on speakers when switched to Standby with SAT demodulator on scart.
• Picture size varies with picture content.
• Works 1 to 2 seconds at switch on. Goes into standby and restarts with REC. After 2 hours, if switching to standby then ON immediately after, sound is present but no picture. LED flickers in red and green.
• Power fluctuates. LED flashing.
• Excessive horizontal size. when cold. (63NA1048 tips)
• Revised picture tube drive adjustments.
• Enter service mode.
• No start-up. Flashing LED after warmup.
• Dark picture. intermittently. Audio OK .
• White stripes in picture. (extract of circuit diagram attached)
• Defective R3503. (with circuit diagram extract)
• No start-up. (picture attached)
• Moire pattern. (extract of circuit diagram attached)
• No picture via Scart and aerial. Menu display and sound are OK.
• GR2.X microprocessors overview.
• Interference noise at picture edges when cold. (picture attached)
• Reduced width plus bowed verticals. (with circuit diagram extract)
• Ringing effect on left-hand side of screen.
• 2 red, 2 green and 2 blue lines in upper picture section.
• No start-up (when cold). (+ extract of circuit diagram) (63NA1048 tip from SBR)
• The power supply transistor BUT12AF blows continuously. (+ extract of circuit diagram)
• No start-up. Standby LED flashes . (+ extract of circuit diagram)
• Collapses immediately with green LED blinking in the rhythm of the collapse. Rattle from loudspeakers.
• Green light comes on then goes red immediately afterwards.
• Switches to protection mode (after a while). LED blinks .
• E/W transistor 7533 fails repeatedly. (with circuit diagram extract)
• Vertical fault.
• Frayed picture (on top).
• No synchronisation.
• Reduced vertical size.
• Start up improves when cold.
• No picture. Audio OK .
• Noise when switching channels. (service info for SBR -63NA1048)
• Protection mode activated. LED blinks .
• Enable child lock. Disable child lock.
• No or intermittent picture. Dark picture. (service info for SBR -63NA1048)
• Trips. (63NA1048 tip from SBR)
• No picture (intermittently).
• Error Nicam, no tunning on VHF channels. (+ extract of circuit diagram) (SBR - 63NA1048 information)
• Vertical line tearing especially on top. Zig-zag lines.
• Picture pulsates on a white background.
• No picture. No audio. (extract of circuit diagram attached)
• Background noise on left channel. (with circuit diagram extract)
• Vertical foldover at top.
• No button operation. Switches to standby.
• No signal. Noise in picture. Noise in line output transformer.
• After standby it is impossible to switch on the TV again. The light flashes. (with circuit diagram extract)
• No picture. Sound present. At switch off test line visible. (with circuit diagram extract)
• Tuner displays ERR. (part of circuit diagram displayed)
• Search problems with mono appliances (+ extract of circuit diagram)
• Thyristor TH6670 (SROR5043) warms too much. (+ extract of circuit diagram)
• Vertical size only 1.5 cm.
• No picture, only something appears on screen on some channels. Noise from transformer.
• Distorted picture during high contrast scenes. (+ extract of circuit diagram)
• Picture width varies according to the light and contrast. (with circuit diagram extract)
• Intermittent breaks on channels 1, 2 and 3; snowy screen. Channels 4, 5 and 6 ok. (part of circuit diagram displayed)
• Interference in audio.
• Flickering picture. when cold.
• Picture is ragged on the top. (extract of circuit diagram attached)
• Picture is visible only for approx. 5 secs at start-up, then grey background with flyback lines.
• Sops faults. (+ extract of circuit diagram)
• Brightness varies. depending on picture content. (+ extract of circuit diagram)
• No start-up. when cold. Red LED blinks.
• Peak white limiter.
• Crackling on test picture (mono appliances). (part of circuit diagram displayed)
• No front panel keys. When pressing buttons, LED changes colour.
• Picture darkens when subtitles are present.
• The picture sometimes disappears for a few seconds (video mute). (with circuit diagram extract)
• Cannot be switched to standby. Otherwise appliance runs ok
• Displays NICAM error in red and no Canal Plus reception. Does not tune all the frequencies.
• Cannot adjust G2 (600V at 800V).
• TV buttons do not function. If buttons are pressed, LED flashes. No sound from any channels. RC is OK.
• No RC functions.
• TS7545 always fails.
• NICAM error message appears. (63NA1048 SBR repair tip)
• SOPS repair set.
• Euro module connections.
• Intermittently dead. (+ extract of circuit diagram) (63NA1048 tip from SBR)
• Picture mutes every 6 sec. Set has memory protection PWB. (picture attached)
• R3551 (560R/0.6W) fails repeatedly.
• No picture. No audio. OSD OK .
• To improve vertical linearity. (63NA1048 tips)
• Picture appears and disappears rhythmically. The LED on the display flashes continuously. (part of circuit diagram displayed)
• Program memory menu can not be called.
• Flashing picture especially when bright.
• Adjusting cut-off point of picture tube.
• PSU transistor (BUT12AF) fails.
• Reduced vertical size. after a few minutes.
• Sound rattle especially in test picture and white pattern with some cable networks. (picture attached)
• PDU pulsates, green light flashes. Raster scanning is apparently OK. (part of circuit diagram displayed)
• UHF fails or intermittently snowy picture.
• Dead. (part of circuit diagram displayed)
• Snowy raster. in UHF (when cold).
• Remains in foreign standard and no standard display in the menu. (extract of circuit diagram attached)
• Crackling audio (on the left). (SBR - 63NA1048 information)
• Black picture with unsynchronised teletext bars. (with circuit diagram extract)
• Power supply fault. Non start up of SOPS from standby. (picture attached)
• No TXT. When cold, picture remains black with TXT signals.
• SVHS signal is visible on tuner position on the screen.
• Retail specialist RC 1375.
• Occasionally sound reduces and picture grows pale. This occurs for a few secs, perhaps several times during a certain operating time. (with circuit diagram extract)
• Jittering or unstable picture, resembles synchonisation fault.
• Excessive vertical size.
• Shuts down.
• Line tearing. (with circuit diagram extract)
• Picture too small. Vertical foldover. at top.
• Poor picture. (SBR - 63NA1048 information)
• Pumps, standby LED lights up green and flashes when deflection plug has been pulled out. (with circuit diagram extract)
• Excessive horizontal size. Pincushion distortion.
• Service menu adjustments MR5.
• Line output IC fails intermittently.
• A production change is being introduced replacing resistors R3624 (330K) and R3625 (560K) with different types. (63NA1048 tips)
• No TXT. Strokes above picture.
• Muted audio. intermittently. (part of circuit diagram displayed)
• Poor focus or picture cuts out and flyback lines.
• No start-up (intermittently). (SBR - 63NA1048 information)
• Excessive vertical deflection at start-up. Picture may be black. Picture OK after approx 15 min.
• Buzz in audio. (picture attached)
• Switches off by itself.
• Severe linearity fault in upper 10 cm of picture. Blue, red, green lines.
• Picture too big.
• Intermittent tripping or switching to standby (LED is red or no LED) or EPROM deprogrammes. Shock sensitive. (with circuit diagram extract)
• Appliance inoperable. I²C bus blocked. (+ extract of circuit diagram)
• Blank picture. Sound available. Test lines at switch off.
• Power supply chopper transistor blows at switch on. (with circuit diagram extract)
• Switching demo mode on and off.
• No horizontal deflection.
• ERR.TXT in picture for several seconds at start-up or channel switch over.
• Displays 'ERR-TXT' in red at the bottom left of the screen when using RC. TV OK.
• Hum only audible during operation.
• Intermittently dead. Set goes into standby with red LED flashing on and off.
• Power supply voltage too high and unstable (ca. 169V).
• Black screen. LOCK in display. Switches to standby.
• Stretched picture.