25M502 ICC3236 / SABA [TV]

• Incorrect line centering. Black bars on the right side.
• Value of RP14.
• Remains on one channel no. When a button is pressed it changes over to another channel but returns to previous one when released. Appliance fitted with PRG touch sensitive buttons.
• FP02 blown at switch on.
• The screen is slightly lit up. The video and voltages are correct.
• All the voltages on the power supply are wrong. U1: 80V instead of 110V. No picture or sound.
• Raster expansion at the top of the screen.
• TP01(BU806) and FP02 (1.6A) fail at start up.
• No colour or colour breaks in the line packet on weak transmissions.
• Does not start up. If TP18 is unsoldered, no longer collapses but picture is too wide. Impossible to adjust U1 (145V instead of 110V).
• Begins to fail at switch on even when connector is unplugged.
• Approx 1cm horizontal line on top of screen at about 5cm from upper edge.
• RP14 and BU208 ae defective. Power supply voltage is ok. Base signal is ok. Line transistor collector pulse is ok. BU does not heat up. Mica has already been replaced.
• Compression from top of picture without displacement. When warm remains 1/4 of an hour on 1/4 of the picture.
• Horizontal line.
• Height or width jump. (25M502 tip from SABA)
• Display flashes. No picture or sound.
• Occasionally when switching on the TV remains in standby.
• No picture in top part of creen.
• Picture and sound good on the powerful signal but very snowy on the average signal. (25M502 tips)
• Picture pulsates according to the picture content especially on the whites.
• Repeated failure of BU806 chopper transistor TP01.
• Raster fails occasionally.
• Sound hums if low pitch is increased.
• Picture shifted to the top, impossible to recentre. Amplitude and vertical shift work, RL=4K7 set to 15K, same thing.
• No picture scanning.
• No E/W correction with aerial signal. Hiccup with signal.
• RP14 O/C. 9V on cathode of zener DP18 (9V).
• No picture in lower part of screen.
• No function. Red LED ON.
• Horizontal lines and picture jitter in UHF. Tunes correctly on band III and picture OK.
• RL31 smokes.
• Picture compression at the top of the screen. EHT whistling.
• No sound, picture or EHT. Emits smoke then fails.
• No brightness or contrast.
• Flyback lines and red screen.
• BU208D and BU806 blow after operating for 10 mins.
• No 24V and no picture at bottom of screen.
• General information.
• Flyback transformer whistles. Line and raster are separated. (25M502 tip from SABA)
• White screen with flyback lines. Sound present, no video, picture out of alignment towards the bottom.
• No function and no display. The very high voltage starts up by short circuiting TP21. (SABA - 25M502 information)
• Spare part info: value of zener DP18.
• Blurry picture.
• Occasionally the channels deprogramme when TV stops. Memory battery is ok.
• No HF signal despite changing the HF/IF tuner (MTS4040S). (SABA - 25M502 information)
• Black stripe at bottom of screen and picture is noisy.
• Flyback lines visible when warm.
• No picture, no sound. Horizontal white bar at top of screen with interference. Switch OFF. Large white spot in centre of screen takes a long time to disappear.
• Humming and picture is shrunken.
• Poor raster synchronisation.
• The light cannot be lowered. Reaction on display but not on the tube both in manual and on the remote control. (service info for SABA -25M502)
• After operating for 30 minutes, the picture becomes blurred.
• Intermittent start up. Display turns on but no picture.
• Dark screen.
• Picture pumping. Vertical foldover.
• Loss of memory at a complete stop. Battery and complete operation unit has been changed.
• Hum and picture shrinks.
• Power supply ok. FBT pulsates. Goes into safety mode.
• TP01 (BU806) blows after working for a few hours.
• PSU and display are pulsating.
• Burnt resistor RP14 at point 8 of the FBT. (25M502 SABA repair tip)
• Line amplitude is too weak and lines are wavy.
• No RC functions.
• E/W fault.
• Appliance fails. After removing the safety mode, half of the picture appears.
• No start up. Line pulsating.
• Power supply pulsates U8=90V. Starts up if TP18 removed but power supply still too low.
• Vertical reduced at the top of the screen.
• Screen is white.
• Goes into safety mode.
• Stuck in standby.
• Occasionally RP14 fails.
• Tuning problem. Although the channel display is correct, the tuner has moved 9 channels (eg. channel 29 instead of 38).
• FP01 (1,25A) fuse blows.
• Intermittently dark screen , also in RGB. Sound ok.
• Whole picture is purple.
• DG05 blows, RL52 burns. Line transformer ok.
• Picture height and width are insufficient ahd the voltage supply is defective.
• No HV.
• Top half of picture is too bright. (service info for SABA -25M502)
• Dead.
• Line desynchronisation of the picture after a moment.
• Bottom of picture is too bright.
• U8=80V, U4=160V, U2=0V. Incorrect voltages; TP18, RP16, DP18, line transformer, TP01, RP11 ok. Transformer power supply, IL01, line BU ok. No voltage on pin 11 of the line transformer.
• Extension at the top of the picture.
• Does not function in LL.
• No picture, only some very bright lines at the bottom of teh screen. Line transformer whistles.
• Doesn't switch to selected channel. Picture shifted.
• White screen with flyback lines.
• Occasionally black screen.
• Variation of brightness everywhere but on the test pattern.
• Tripping when switching on or after a while. Pincushion effect, green screen with flyback lines. (25M502 SABA repair tip)
• Occasionally no sound or picture. Memory is erased but RAM is ok.
• Display and line transformer pump.
• The appliance functions ok for 5 mins then begins to pulsate.
• Power supply, line transformer, display begin to pulsate when appliance is switched on.
• Goes into standby when switched on. Display flashes once and starts up.
• Picture is scarcely recognisable. Incorrect signal at pin 23 of MTS4000. (SABA - 25M502 information)
• Red tint in picture.
• Line BU heats up.
• Fuse FP02 blows as soon as appliance is switched on. No apparent S/C.
• Display flashes. No sound or picture. Voltage at point 11 of the line transformer varies.
• Picture lacks width and flyback lines.
• No start-up.
• No colour, only visible in black and white.
• TL02 (BU208D) S/C.
• After changing TDA1950, TV does not start up. Standby light appears then disappears. 80V, 12V, 20V ok, line transformer and BU ok.
• When cold if the aerial is connected the TV goes into safety mode. Picture appears but does not synchronise horizontally. OK after 1 min.
• When cold the picture fades, then poor colours with very fine blue lines across the screen.
• TP01, BU807 destroyed in 30 secs. Change TP02,04 etc. Line transformer IPL feedback ok without TP01. Mini scanning ok. New FBT.
• Picture is out of alignment towards the top.
• Change over display to "German".
• Flyback lines and noise from line transformer.
• Flyback line at top of picture.
• Power supply BU clicks at start-up.
• RP14 burnt.
• Screen is very blurred with a rainbow effect but without picture. Frame line scans to the outside of the screen.
• Noise signal in low frequency.
• Interference lines at top of screen.
• No RC reception.
• Display flashes after changing TDA4610.
• Occasionally sound or picture fail and the memory is erased. RAM is correct. (25M502 tip from SABA)
• E/W correction does not function. (service info for SABA -25M502)
• Doesn't tune any TV channel.
• E/W correction fault.
• EHT whistles. Picture compressed upwards.
• Multicoloured screen and incorrect purity.
• Hums and picture shrinks.
• Display is scanned continuously. (25M502 tips)
• Dashes on the picture.
• Picture shifted downwards. Only 5 cm visible.
• No sound or picture (no EHT). Gives off smoke before failing.
• Blurred picture after 1/2 hour.
• EHT pumps.
• Loud noise and unstable raster.
• Line output transformer is defective.
• Line amplitude is too weak and wavy lines appear.
• No function. By short circuiting TP211, the TV functions. TP21, CP12, DF41/42, TP1, tp2 OK. Battery is ok.
• Intermittent tripping when switching appliance on.
• Picture with long horizontal streaks according to the content.
• Poor brightness and contrast. The white parts of the picture are clipped.
• Not enough height or width. No decoupling power supply.
• Distorted E/W and strange noise similar to self-oscillation.
• The picture jumps up and down and there is not enough height at the bottom of the screen.
• After a short operation time, picture starts to faint gradually until screen is black. Sound OK.
• Frequency drift after a few minutes.
• Difficult restart after switching off. Adjustment impossible.
• Top part of picture has shifted. (SABA - 25M502 information)
• No horizontal deflection.
• Picture torn at the top and bottom.
• Store basic values.
• For the second time, BU208D and fuse (1.6A) are defective.
• Quick run through of raster. No adjustment with synchronisation pot.
• Very bright horizontal bar measuring a few cms with sharp whistling. (25M502 tip from SABA)
• Ondulations at top of picture.
• Little contrast and brightness.
• Line centralising is incorrect and there is a black stripe on the right side of the screen.
• The top 5cm of the screen is covered by black lines. Line transformer whistles. The whistling stops if you increase the height.
• Approx 2cm horizontal line on centre of screen. Whistle from line transformer.
• Black stripe in upper part. Displacement towards the bottom.
• Picture content does not change when changing channel.
• No longer stores any channels.
• Line- and picture scanning fail occasionally. FBT whistles.
• Impossible to store the channels. Also impossible to open the memory by prolonged pressing on the C button.
• Screen is multicoloured and of poor quality.
• Vertical interference bands appear on both sides of the screen.
• No reception, I.F. noise on all channels.
• Traces of red but no red colour.
• FP01 blown.
• Doesn't tune any channel.
• Picture moves to bottom of screen.
• Secondary power supply and EHT pumping.
• Harsh noise and unstable rasters.
• Constant scanning on the display.
• No start up and no standby. When vertical is disconnected, TV starts up with white bar. Normal during operation. When vertical deflector is connected horizontal bars of different colours appear in middle of screen.
• Picture becomes crypted now and then. Sound OK.
• Dark screen. Line transformer, scanning and voltage ok. Screen brightens if G2 is turned up. No voltage on pin 26 of the TDA3506 which has been changed. Video signal is very strange, does not function in RGB via scart.
• U1=90V, U2=1V, U3=20V, U4=160V, U5=6V, U6=9V, U7=25V, U8=90V, U9=1V.
• Vertical unstability.
• Power supply pulsating.
• Dominant colour with flyback lines. (SABA - 25M502 information)
• Display flashes. No sound or picture. On point 11 line transformer voltage varies. (SABA - 25M502 information)
• The picture is tinged with flyback lines which are visible when hot.
• Intermittently does not start up when switched on, even the raster connector. Line disconnected.
• Display and power supply pulsate.
• No picture. Sound OK.
• There is no green. The amplifier is correct. There is 40V at the collector of the TV62. The fault arose after the appliance suffered a fall.
• Picture shifts to the right.
• No UHF reception but VHF is ok. Displays the channels ok.
• Eliminating a possible BF humming.
• Screen darkens from left to right.
• In standby but standby LED off.
• Picture flickering.
• Returns to first channel and weak sound (model with 8 soft-touch buttons).
• Geometry fault which resembles a filtering fault.
• Picture distorted on the right and left of the screen, 4-5cm from the bottom and over 1cm or 2cm in width.
• Variation of frame stability or intermittent pulsating. (25M502 tip from SABA)
• Picture amplitude is too high.
• Little or no video.
• No Y signal.
• Top of picture is over 1cm at bottom of screen. The rest of the screen is covered by greenish, blueish and reddish fuzzy vertical bands. (25M502 tips)
• Picture with one predominant colour even in black and white.
• No contrast.
• Height and width fault. U1 voltage is incorrect.
• At switch on, oscillates in safety mode, starts up after 2 mins with a line fault which disappears after 1 min.
• Distorted/negative/ragged picture. Unable to adjust it.
• 80V instead of 143V. No power supply at TDA1950.
• No start up. Fast tripping.
• Height and width fault. U1 voltage is incorrect.
• Picture collapses every 2 minutes in Canal Plus.
• No 7V (U5), HF or display.
• Excessive brightness. G2 does not react.
• Picture darkens for a few secs then returns to normal after a few mins.
• No sound in HF. The fault is on the MAM30M board. But where ?.
• Picture brightens and flyback lines present. Sometimes start up audible and picture becomes normal again.
• Fuse and mains transistor (BU806) blown.
• Cuts out after a min. 1250V line pulse is slightly curved at back of wavefront. BU heats up too much. (SABA - 25M502 information)
• At times encoded picture, sound ok. Scart socket ok. TV16, RV11, CV12, IV21, TV49 ok. Canal Plus ok.
• Poor voltage. U3: 18V on RL52. CL28 and PTC ok. U4: 160V, U2: 1V.
• White screen. No audio.
• Fails. Half of the picture appears if safety mode is switched off.
• Picture is predominantly red in HF and in scart. No black and white when colour pot is at min.
• Poor vertical linearity and height excess.
• Red appears weak for an instant. Flyback lines are visible.
• ON4147 (BU 508A) is defective.
• PSU pulsates.
• Replacement kit of thyristor ESM740/G1/G2.
• All the secondary voltages of the line stage transformer are lower than normal.
• Dropouts.
• No muting.
• Drifting on both sides of screen.
• Pincushion effect. Impossible adjust it with pots. Barrel shape pot PG03 does not adjust either. (25M502 SABA repair tip)
• Doesn't tune band 4 and band 5 channels. Tunes correctly on bands 1 and 3.
• No picture. White screen. Sound OK.
• Problematic start up. Often remains in standby and the switch needs to be pressed several times to start up the TV. Nothing abnormal at the switch and solder joint level
• Picture shifts to top of screen.
• Vertical roll upward when warm.
• No vertical scanning and horizontal band which divides itself into several small moving lines. Line transformer whistles.
• No brightness.
• Height and width fault and adjustment is not possible.
• Insufficient line amplitude.
• Double picture.