MM7103 / MICROMAXX [TV]

• Noises in standby. (MM7103 tips)
• C625 get hot.
• Fine bright lines flicker on the top of picture.
• E/W fault. Excessive brightness. No brightness control.
• Dead. PSU pulsates.
• Stuck in standby.
• No start-up. LED is green.
• No picture.
• No raster. White bar at top.
• Green LED lit after switch on.
• E/W error. Picture increases.
• Increased current uptake (1-1.5A).
• No picture. No audio.
• No start up, no LED lights up. Loudspeaker crackle faintly every second.
• No start-up from standby with RC.
• Crackling from PSU when switched to standby.
• No function. Green LED lights up for a short time.
• Appliance ticks.
• PSU transistor fails immediately after start-up.
• No E/W correction.
• At max. brightness and contrast picture collapses. E/W is slightly distorted.
• Picture drops out, intermittently coloured stripes. Sound available.
• No start-up, low ticking. LED is green. Switches off immediately. LED becomes red.
• Does not start. Starts up briefly, then switches off immediately. Standby LED remains green.
• TDA8351 is defective.
• Line output stage transistor (BUH1015) fails after 30 mins. (MM7103 MICROMAXX repair tip)
• Dead or tripping. (MICROMAXX - MM7103 information)
• Starts up for a short time, then switches off again. Protective circuit switches on.
• No start-up. (MM7103 tip from MICROMAXX)
• No picture. Audio OK .
• Crackling audio. (MM7103 tip from MICROMAXX)
• Dark picture. intermittently.
• Horizontal size varies. Knock sensitive.
• Lack of contrast in picture and bright with flyback lines. Slight E/W fault in test picture.
• No functions.
• Switches to protection mode.
• Slight E/W fault when appliance cold.
• Switches to standby.
• Line output stage starts up for a short while, then switches off. Sound available.
• Poor start. After repeated attempts it runs perfectly again.
• No picture. Switches to protection mode. Audio OK .
• Permanent cracking.
• Enter service mode.
• Very distorted and fuzzy picture. Colours overmodulated.
• Thick white flyback lines in upper picture third, also via scart.
• PSU does not start. Standby LED changes from red to green when switched on via RC.
• Heater continuously on, even in standby.
• Briefly switches on from standby. LED becomes green.
• H drive is O/C after switch on and high voltage build up. Sound ok.
• Bright picture. Flyback lines.
• Excessive horizontal size. Pincushion distortion.
• Clicking noise.
• E/W fault, jagged edge in picture, flyback ines when switching.
• Line output stage does not start up.
• PSU no function. (MM7103 MICROMAXX repair tip)
• Vertical foldover at top.
• No vertical deflection.
• Line output stage transistor (2SC5129) fails.
• Dead after short ON and OFF. Standby only.
• Coloured circle in the picture.
• No start up. Standby LED is briefly green, then red again.
• Vertical fault. Flyback lines.
• No functions. PSU ticks.
• No picture. on upper half screen. Flyback lines.
• Dark screen. Audio OK .
• Comes on for a short time.
• Comes on for a short time. LED is green.
• No fucntion. Green LED lit after start up.
• Reduced vertical size.
• E/W fault.
• Flyback lines. at top.
• Slightly reduced picture linearity and flyback lines in upper half of picture.
• Becomes dark for approx. 2 mins after approx. 20 min.