6550A COLORSTEREO5038 / NORDMENDE [TV]

• No functions. (with circuit diagram extract)
• Vertical collapse.
• Switches on by itself.
• Only snow. Picture appears only after 15 mins.
• Intermittently separating line between two picture is shifted downwards. (6550A tip from NORDMENDE)
• No start up. Discharge noises.
• Only white stripes every 15 lines approx. Vertical deflection is defective. Sound OK. (extract of circuit diagram attached) (6550A tips)
• TP01 (BU807) fails every other week. (+ extract of circuit diagram)
• HV pulsates.
• No start-up from standby.
• Excessive picture width when adjusting contrast or brightness.
• Intermittent failure of BU806 chopper transistor and BU508 line output transistor.
• E/W fault. (6550A tip from NORDMENDE)
• E/W error. Cannot be adjusted.
• Picture too small. after a while.
• No E/W correction. (+ extract of circuit diagram)
• E/W correction is defective.
• No HV.
• No UHF channels. intermittently. No picture, only snow. Knock sensitive.
• Picture separating line is visible.
• No vertical deflection or fails occasionally.
• Loss of memory after switch on.
• No functions. Display OK . (part of circuit diagram displayed)
• Picture has shifted upwards.
• No tuning.
• Switches off then works again for a few days.
• Noise when picture is bright (Intercarrier buzzing).
• Memorization of basic values.
• Cycles on/off.
• Variations in focusing.
• No picture. Display OK .
• Horizontal jitter.
• Reduced horizontal size. E/W fault. (extract of circuit diagram attached) (6550A tip from NORDMENDE)
• Picture flutters and becomes warped in horizontal direction. Poor synchronisation. (extract of circuit diagram attached)
• No picture. No audio. intermittently. Display OK .
• No picture.
• Pulsates. (6550A tip from NORDMENDE)
• Incorrect vertical amplitude (lines at top of picture).
• TP01 (BU807) has a short circuit. After replacing the appliance functions perfectly for up to 3 months then has another short circuit when the appliance is switched on.
• No picture. No audio. Display OK .
• Picture slowly gets brighter, flyback lines in picture.
• E/W (TDA4950) and LG02 smoking then failure.
• Appliance hiccups. If pin 4 or 7 of the transformer are loose, the appliance will start, but there is no picture or sound. Other functions are fine. (+ extract of circuit diagram)
• TP01 (BU806) fails again and again within 2-3 months.
• White screen. Flyback lines. Switches to standby. after a few seconds.
• Narrow raster with wavy edges.
• No brightness. No colour. No contrast.
• Fuse and transistor (BU806) blown.
• Excessive horizontal size.
• RP14 fails immediately after start-up.
• Change display to "German".
• Excessive brightness. Flyback lines. Switches off by itself. after a while.
• Dead.
• Trips.
• Power supply transistor BU806 fails after approx five mins. after switching on a second time.
• Stuck in standby.
• Hot E/W coil after replacement of HT transformer. Occasional hiccups.
• No start-up. Standby LED flashes .
• The output stage ticks. All semi conductors and LOPT have already been replaced unsuccessfully. (extract of circuit diagram attached)
• Vertical foldover at bottom.
• Appliance is dead (no stand-by) after replacing the back-up battery.
• Vertically defective: line of light in bottom of picture.
• Strong colours. Flyback lines. intermittently.
• Cushion effect. Pots do not respond.
• No audio. Picture OK .
• 2-4 hiccups, HT builds up, then switches off.