STV7200S / OTTOVERSAND [TV]

• T2 in the vertical stage comes flying out after approx 30 mins. IC1 and C5 already replaced in this stage.
• Station storage (special channels) on some channel sites are suddenly no longer possible. After pressing Memory, station drifts.
• Adjusting the linearity.
• When switching on the picture is dark then you can see a white horizontal line in the top half of the screen. (service info for OTTOVERSAND -STV7200S)
• End stageTRS T2 drop-out in vertical deflection.
• Value of T15?
• Line output stage transistor fails again after a short time.
• Vertical line. at top.
• Operating voltage adjustment.
• Predominantly yellow. Picture and sound ok.
• Top quarter of picture is dark and pulled, if appliance is cold.
• Horizontal centre adjustment.
• Picture and sound OK but strong predominant green.
• No mono. Stereo OK. (STV7200S tip from OTTOVERSAND)
• One colour missing.
• After approx 3 hours, goes into standby. Then can be started and continues running.
• No CRT heating.
• Top half of the picture is ok, but the bottom half is bent with a white line in the centre. (STV7200S tips)
• Geometry adjustment.
• No video and audio IF.
• IC1 blows.
• Adjusting the brightness and contrast.
• E/W fault. Picture collapses.
• One of the basic 3 colours is missing. (STV7200S tips)
• No sound after inserting the station table, sound only reoccurs with stereo transmissions after blanking. With mono by switching over channels.
• Black screen. No audio. OSD OK .
• Power supply pulsates. Very low secondary voltages.
• Red striations on the picture.
• Picture is drawn in on bottom.
• The PSU will not oscillate.
• Vertical centre adjustment.
• How to access control SERVICE mode to correct height and East/West.
• Picture has a green flyback line.
• Focus adjustment.
• No reception in upper channel range. Analog values and programs can not be stored.
• Picture varies in brightness and is very dark. Picture gets lighter if contrast turned down.
• Hum in sound via RF. Picture OK. Picture and sound OK via scart.
• No channels over 48. Stations cannot be stored. Some stations in memory are ok.
• Vertical centre adjustment. (service info for OTTOVERSAND -STV7200S)
• After operating for 3 hours renewed failure of the line BU. (OTTOVERSAND - STV7200S information)
• PSU fails every few days. IC201, R216 and T201 are then defective.
• No start-up.
• No standby and start up indication.
• No or weak red, green or blue.
• Set at full volume it is too quiet and a strong hum can be heard.
• Snow. Picture appears after 1 min.
• Some (high) channels can't be adjusted.
• Vertically reduced picture.
• Ref of T1, value of R5 and R6?
• Slight flyback lines in the top part of the picture.
• BU508A in the horizontal output stage was defective. After replacing, ticking from loudspeaker, appliance does not start up.
• Factory setting for tube A 63 NCQ 00X 08
• Excessive horizontal size. (STV7200S tips)
• No sound with mono transmissions.
• Horizontal centre adjustment.
• Cushion adjustment.
• Picture is like a negative when the contrast button is pushed.
• One colour missing. (No blue, red or green) (STV7200S tips)
• Picture is noisy and occasionally too small.
• When switching on, short attempt to start up. Standby LED lights up.
• No picture, T2 (BD683) gets hot. At switch on the picture up to T2 gets so hot that the 17.5V fails. Picture has then disappeared and the voltage dropped to 3V.
• After switching on mains, appliance only ticks. (LOPT)
• No picture. Audio OK .
• T1 (BU 903) in the primary power supply fails repeatedly in different circumstances.
• Blank raster and controls do not work.
• Adjusting the vertical amplitude (coarse and fine).
• Line is folded over, it is set to the wrong standard. Does not synchronise.
• Stuck in standby. (OTTOVERSAND - STV7200S information)
• Spare part info: type of 1C1 (STV7200S tip from OTTOVERSAND)
• Line output stage does not oscillate correctly.
• Ticking at switch on and the green LED may flicker.
• White screen. Flyback lines.
• Pincushion distortion adjustment.
• Adjusting the white setting.
• Linearity distorted on top.
• Picture is displaced to the bottom of the screen. Fault recedes when appliance warms up. (service info for OTTOVERSAND -STV7200S)
• Horizontal foldover.
• No tuner reception after repairing power supply. Ok in scart. Tuner voltage ok.
• Reduced vertical size.
• Poor synchronisation. Lines in picture (when cold).
• Pin cushion.
• TEA2164 is burnt.
• No start up, line BU ok. No standby light on, TEA2164 changed, fuse ok, power supply pin 2 TEA2164 ok.
• Bright picture. Flyback lines. (extract of circuit diagram attached)
• Vertical lines.
• Setting the centering.
• Appliance does not switch on. Standby is on. When attempting to switch on there is a short build up of high voltage.
• No vertical deflection (intermittently). (STV7200S tips)
• No tuning.
• Reduced horizontal deflection.
• S/C on the mains side.
• Blue picture.
• No functions.
• Picture centering adjustment.
• No sound at RF (Multi-IF).
• Picture shifted vertically. at top.
• Jerky sound in HF and scart.
• At start up, blows suddenly then stops. (STV7200S OTTOVERSAND repair tip)
• On standby the PSU runs but after turning the set on, it only starts up for a moment and returns to standby.
• Occasionally picture reappears after switching off with the RCU.
• Backing up in SERVICE mode.
• Shuts down (intermittently).
• Colour missing (for ex. red).
• Poor operation of the raster time base.
• Buzzing on sound mostly on channels 5, M6 and Canal Plus.
• Line output transistor fails repeatedly.
• Horizontal stripes in the top third of the picture. The upper linearity is limited.
• Green LED flickers in front panel, no EHT.
• CCU snow.
• Line tearing in dark sections of picture, mostly at VCR PB.
• Test mode.
• PSU doesn't oscillate.
• Switches off by itself. after a few seconds.
• Fine red bar at bottom of screen. It appears on side of screen when power supply pot. is used.
• Vertical interference lines on the left side of the picture.
• Important problem in PSU.
• Adjusting theoperating voltage.
• Chirping when picture is bright.
• Grey picture with flyback lines.
• No channel storing.
• Attempts to start via RC but switches off. Standby OK.
• Sound fails when set is warm. Sometimes also left and right picture pinching.
• TXT and OSD displaced to the left or right.
• Horizontal centering adjustment with teletext.
• Reduced horizontal size.
• PSU pulsates in 50Hz cycle.
• In HF reception sound is defective. AV ok. (service info for OTTOVERSAND -STV7200S)
• The picture changes occasionally (varies).
• Switches off by itself (after a while). (STV7200S OTTOVERSAND repair tip)
• BU508A constantly becomes defective, picture shifted to the right.
• Squealing noise. Full brightness on the picture.
• The sound from one or both of the speakers crackles after operating for a longer time.
• IC1 (TEA2164) is defective. (STV7200S tip from OTTOVERSAND)
• Picture cuts out after a few mins. Sound and channel change ok. Difficulties at start up if TV is switched off.
• Line BU blows after 3 hours.
• Linearity fault at the top of the picture.
• Picture too small.
• Line BU destroyed when hot.
• Linearity adjustment.
• No picture content with a max adjusted G2 regulator.
• No vertical deflection.
• Black balance adjustment.
• Type of transistor T5.
• Functions OK for a few days then picture becomes negative.
• No LED at start up. Low voltages.
• Horizontal band in picture, sound OK.
• BU508A defective. (STV7200S OTTOVERSAND repair tip)
• Picture is very distorted, horizontal deflection fault; line output stage oscillates incorrectly; appliance whistles and after approx 1 min switches to stand by.
• No picture. No audio.
• Transistor T2 type. (STV7200S tip from OTTOVERSAND)
• Screen is red and has no picture content. On screen function is not visible. (OTTOVERSAND - STV7200S information)
• Inverted trapezium distortion, flickering in upper half of picture.
• A colour is missing or strong striations and flags.
• Moves from channel over channel 42. Storing channels below channel 42 OK. No storing of channels over channel 42.
• Wavy lines when connecting to a muli-user aerial in a block of flats. Channels which lie close together distort the reception in BIII.
• BU508A always fails.
• Sound buzzing when picture background is white.
• Enter service mode.
• Power supply voltages are too low and only increase slightly if the "ON" switch on the control panel is held in.
• Does not start, standby ok. If you hold in place the On switch high voltage occurs and appliance hisses, after you release the switch, goes immediately to standby again.
• Slight, distorted horizontal stripe on the picture. Line pairing visible. Hum runs through from top to bottom.
• Line BU508 blows after a few minutes or after 2 or 3 hours operating.
• Line tearing similar to "mouse teeth" on the picture.
• Vertical amplitude, coarse, vertical amplitude, fine adjustment.
• Focus adjustment. (STV7200S OTTOVERSAND repair tip)
• Remains in standby, starts up only for a fraction of a sec then goes into standby again.
• 9cm horizontal picture shift on right side. Picture ok in reception via scart.
• Flyback lines. at top.
• Stuck in standby. Short rustle of EHT at power on.
• No raster. Sound and line transformer present.
• Screen has unstable coloured bars. Picture is perfect via scart.
• No sound at RF reception (Multi-IF). Mostly knock sensitive.
• Dead.
• Slightly compressed picture on right.
• E/W Pin cushion too large and E/W pin cushion too small adjustment.
• PSU does not start. No starting attempt.
• Brightness and contrast adjustment.
• E/W fault.
• EHT does not start up.
• Linearity at top edge of picture cannot be adjusted ie pic. is tightly compressed at the top. (OTTOVERSAND - STV7200S information)
• RGB adjustment in Service Mode.
• Colour adjustment. (service info for OTTOVERSAND -STV7200S)
• Value of resistor R15.
• No picture. No sound. The PSU oscillates. No CRT heating.
• Incorrect colour. Yellow with flyback lines (no blue).
• Low audio. OK via SCART .
• Sound is low and peak level distorted. (OTTOVERSAND - STV7200S information)
• White adjustment.
• Memory command is acknowledged but not carried out. Transmitter symbol can be written but not stored.
• No audio and video IF.
• The voltage in the vertical stage is too high (instead of 17.3V it is over 40V). It is already measurable at diode D11 (BY299). The appliance runs occasionally if you start it up for a longer time (10 mins).
• Spare part info: type of power supply transistor.
• Fails. Knock sensitive. (STV7200S OTTOVERSAND repair tip)
• Black adjustment.
• Adjusting the horizontal amplitude.
• Occasionally goes to standby. Then can be switched on again. (STV7200S OTTOVERSAND repair tip)
• No mono sound is present, stereo sound is slightly distorted.
• Store analog values (contrast, brightness) as standard/PP values.
• Lines have shifted by approx 2mm each line.
• Chirping. Picture at max. brightness. High voltage crackling near the deflection unit.
• Doesn't store or stores only after several attempts.
• Colour adjustment.
• Line transformer whistles after 15-20 mins and a short time afterwards BU fails.
• Occasionally picture reappears after switching off with the RCU.
• Slight E/W fault, appliance switches off after a short time. Then loud chirping in Stand-by mode.
• Switches off by itself. (STV7200S OTTOVERSAND repair tip)
• Harsh ticking noise when increasing or lowering volume.
• How to store channels.
• Horizontal size adjustment.
• After pressing the mains switch and finally switching on with the remote control or the button on the appliance, sometimes there is no picture and no sound. You can hear the horizontal output stage functioning.
• No function via the RC. Operation on appliance is ok.
• Line BU (BU508A) S/C.
• No blue.
• Yellow screen with flyback lines. Hardly visible picture. Sound OK on all channels.