21D6F / SCHAUBLORENZ [TV]

• G2 and colour temperature alignment adjustment.
• U1 voltage alignment adjustment.
• Teletext decoder alignment. (21D6F tip from SCHAUBLORENZ)
• Appliance breaks down.
• When cold, TDA2653A burns out. (extract of circuit diagram attached)
• Short white lines run through the picture. Background has no picture content. Neither TV sound nor noise can be heard. Picture and sound occur after 10 mins
• Does not switch on from standby with RC. Other functions are OK. May occur after a few days. (+ extract of circuit diagram)
• In cold conditions, PSU triggers. Attempts to start, but it blocks.
• Switches to protection mode.
• Appliance is dead. when switching on the standby LED flashes once.
• Intermittently switches to standby when on for few minutes; then OK when switched back on; click from speakers when switching off. (extract of circuit diagram attached)
• Vertical position alignment adjustment.
• No colour and no contrast (commands do not respond). Display OK.
• Reduced horizontal size. intermittently.
• Numerous defects in power supply.
• No start-up. (extract of circuit diagram attached)
• Tripping or pulsing.
• Switches to standby, can be restarted again. No fault when TXT is activated.
• No raster. Possibly sound ok. Standby LED ok. Possibly NICAM LED flashing. (picture attached) (21D6F tips)
• Switches off after short operation while.
• Bright picture. Flyback lines. Switches off by itself. after a few seconds.
• Bright picture with flyback lines after 30 mins.
• Buzz in audio.
• Power supply collapses. Power supply ok when 26V raster disconnected.
• When TV started up, transistor (S2000AF) instantly burn out.
• Stuck in standby. Front LED ok at switch on, then standby LED. Front LED and stereo LED flicker successively when tuning in a channel with RC or with front controls. (+ extract of circuit diagram) (service info for SCHAUBLORENZ -21D6F)
• Picture has shifted to the left and is black and white. No sound. OSD is positioned correctly, 8362 has been changed.
• No synchronisation. Audio and OSD OK .
• 1 pulse then dead.
• White screen. (picture attached)
• Tries to start up but switches off after a sec.
• Resistor R050 in PSU fails.
• DD01 (TDA8360/62) is defective.
• Contrast and colour will not increase.
• Horizontal tearing. when cold.
• Only black picture and OSD after a while. No sound.
• Enable Hotel mode.
• Horizontal line. in the centre. (extract of circuit diagram attached) (21D6F SCHAUBLORENZ repair tip)
• Disable hotel mode.
• Stuck in standby. (part of circuit diagram displayed)
• Coloured menu. (21D6F tips)
• PSU pulsates.
• No audio. Picture OK . (21D6F tips)
• When cold, switches off almost immediately; symptom gradually improves as appliance gets warmer. If brightness is turned down stops switching off. (extract of circuit diagram attached)
• No reception in cable network.
• TV does not function. 50V on 120V line, power supply secondaries OK, line transformer secondaries OK, power supply TEA has been changed, standby light is off, power supply BU oscillograms incorrect. (21D6F tips)
• Setting U1.
• Picture does not hold.
• AGC adjustment.
• Power supply transistor (BUF405A) blown after approx 1½ hrs.
• Slow start-up.
• Impossible to start up from standby. Normally starts up from On/Off switch.
• No sound in the tuner, picture ok. After a moment TV stops as if there was no programme. Does not stop on channels in channel search. Sound ok in scart.
• No picture. (21D6F tips)
• Almost negative picture.
• Interference at switch-off.
• Diode VK03 (ZPY 5.6V) is defective.
• Failure of line drive transistor VK01. (SCHAUBLORENZ - 21D6F information)
• Insufficient picture height.
• Wavy vertical lines, sometimes very obvious, sometimes faint. Noise from low voltage power supply. (extract of circuit diagram attached)
• Shuts down. after start-up.
• Low contrast.
• No contrast.
• Picture and sound muted when standby selected.
• After replacing capacitor C033 it fails again within a few months.
• Switches to standby (intermittently). (part of circuit diagram displayed)
• Low contrast. Low brightness.
• Switches off by itself. after a few minutes.
• No vertical deflection. Frying noise from PSU. (21D6F tips)
• Dark screen. at start-up. (+ extract of circuit diagram)
• Vertical amplitude alignment adjustment.
• Picture tube board 5858 2050 does not fit into the chassis version with the connection plugs.
• Faulty PSU.
• No audio. OK via SCART . Switches to standby (after a few minutes).
• No UHF mode. OK in VHF mode. (SCHAUBLORENZ - 21D6F information)
• Resistor RK31 has changed colour.
• Fails after 3/4 of an hour, no standby LED after replacing line output transformer. Crackling in loudspeaker at switch off. After switch off runs again for only approx 3/4 of an hour. (21D6F tips)
• Focus alignment adjustment.
• Horizontal line.
• Picture loss after 30-40 mins. Audio OK.
• Dead. Standby LED ok. Possibly NICAM LED flashing. Possibly sound ok. (+ extract of circuit diagram)
• Screen has white line across.
• Picture collapses to lines, is reduced and drops out after approx. 1 min operation.
• Setting the horizontal amplitude.
• No vertical deflection.
• Poor vertical linearity.
• No functions.
• EHT appears briefly and PSU cuts out.
• Setting the focus.
• Does not display SECAM standard. Operates ok in SECAM via scart. Functions ok in PAL, selection of standard 2 or 3 ok.
• AFC alignment check.
• Enter service mode.
• No start-up (intermittently).
• Interference noise in NICAM sound during SECAM-L reception. (by very high volume set-up).
• Vertical collapse. (+ extract of circuit diagram)
• Reduced horizontal size.
• Adjusting the sound.
• When using a NINTENDO console, TV does not return to TV mode after putting NINTENDO console into standby.
• Reduced vertical size.
• Horizontal line, picture dark in AV and can not be switched further.
• Bright picture. Flyback lines.
• Standby line whistles.
• Dim picture. after warm-up.
• Trips. (21D6F tips)
• No functions. Standby LED lit . (part of circuit diagram displayed)
• AFC adjustment.
• TV starts up when cold and cuts out after 20 secs then power supply pulsates. Occasionally functions for 1 hour. (service info for SCHAUBLORENZ -21D6F)
• Picture crackling at switch on.
• Colour tint in screen centre after switch-off.
• Sound calibration alignment - Multinorm Module.
• Picture is very blurred and vertical is not synchronised. With a VCR connected to scart picture is synchronised and is ok.
• No start up. When switching off by the switch the front LED lights up for a short time. Restricted lamp and sound present before cut off. Nothing if you insist.
• Picture has shifted with approx. 3cm to the right, as if foldover available.
• Poor audio. No colour. Picture shifted to the left.
• Afterglow at switch off.
• PSU starts up briefly then no functions. (21D6F tip from SCHAUBLORENZ)
• No colour. No contrast. Picture has shifted horizontally by 5cm towards left-hand side.
• Tuning drifts. No TXT.
• Low power supply voltages which increase when line transformer is disconnected.
• Dull picture and lack of luminance, chroma OK.
• Picture adjustment is not done in manual search of channels B and C. Sound adjustment ok.
• After line transformer has been changed high voltage flash overs in the focus regulator.
• Picture is faint and has no vertical synchronization.
• Power supply doesn't start up, after restart with mains switch functions OK.
• Impossible to switch back on again after standby.
• Line tearing. after a few minutes. Switches to standby. (extract of circuit diagram attached)
• When selecting other than page 100, text comes on with page 888 for eg. Only on some channels.
• No synch and no text via scart. Ok via HF.
• Blows fuse. intermittently.
• Picture pulls horizontally. OK when warm. (21D6F tips)
• Horizontal and vertical holds of both syncs are lost.
• Switches to standby. after a while. No start-up. when cold. (with circuit diagram extract)
• If contrast is at maximum, when bright advertisments come up, TV turns off and switches to standby.
• Line driver TSVK01 (BC327-25) fails immediately.
• Dead or stuck in standby.
• No picture. OSD OK . (picture attached)
• Text processor switches to TEST mode.
• Muted audio. intermittently.
• Poor line sync.
• Picture jumps from normal program to noise or to another program.
• Dead (intermittently).
• Green picture. Flyback lines. (+ extract of circuit diagram)
• Squealing from PSU (after start-up). Excessive horizontal size. (picture attached)
• 4cm band at the top and bottom of the screen and picture jumps.
• E/W correction fault. Picture rounded to centre.
• Poor contrast, almost negative picture, especially via AV.
• Goes into automatic search after operating for a few mins. Channel buttons blocked on the RC. (SCHAUBLORENZ - 21D6F information)
• Loud whistling of the HT when warm. (service info for SCHAUBLORENZ -21D6F)
• Horizontal roll.
• Screen becomes whiter and whiter. Appliance switches off and then goes to standby. Startup and sound are OK.
• Dead. Squealing from PSU. (with circuit diagram extract) (SCHAUBLORENZ - 21D6F information)
• Horizontal output stage fails immediately. (with circuit diagram extract)
• No function. Standby LED flashes at switch on. No picture. No sound.
• Horizontal amplitude alignment adjustment.
• When sunlight falls on receiver, remote control does not function.
• When warm UHF channels drift, particularly between channels 33 and 59. (+ extract of circuit diagram) (service info for SCHAUBLORENZ -21D6F)
• C033 (10uF) runs hot.
• No audio.
• Poor contrast via AV, TV-picture also somehow sludgy.
• In automatic search channels B and C are not recognised or stored.