LT7001 IE4000 / LIFETEC [TV]

• Poor start up via RC after mains disconnection.
• Starts, red LED becomes darker for operation and then can not be operated.
• Reduced vertical and horizontal size.
• Streaking and striations in the picture, only with certain picture content. (service info for LIFETEC -LT7001)
• Comes on for a short time.
• Vertical white bars in the picture at AV inputs (position varies). Fault present when AV appliance is switched on.
• Line output stage transistor and R5369 are defective.
• Hiccups. Picture size is knock sensitive.
• Switches off by itself. LED lit. .
• Squealing noise.
• Protection icon (3 blinking patterns) on screen.
• Switches to standby (intermittently).
• Switches after approx. 20-30 min running time to standby, can be switched on again. Switch-off times shortens when appliance has been operated for longer.
• No start-up. Standby LED lit . (service info for LIFETEC -LT7001)
• Dead. Standby LED flashes .
• Picture foldover at top. White lines in upper third of picture.
• Switches to standby after an some time and LED flashes 3 times rhythmically. After switching power switch off and on again, appliance plays properly for an indeterminate time.
• Rainbow colours in picture. (LT7001 tips)
• Driver transistor is defective.
• Colours on faces and in the background change on some channels.
• Distortion in lower picture area depending on beam current.
• Green picture. (service info for LIFETEC -LT7001)
• No 33V tuning voltage.
• Intermittently only bright disc, blurred during TXT or menu display, knocksensitive.
• Brightness changes when switching from 4:3 and 14:9 format, picture becomes darker.
• Vertical fault.
• No audio from the subwoofer.
• CRT is fully turned up. Switches off immediately.
• Picture is only the size of a post card.
• Dark picture and unstable brightness/colour. Intermittently error occurs after a long operation while.
• Flyback lines (intermittently).
• PSU ticks.
• Changes channels upward continuously.
• E/W fault, then completely off.
• Switches on, LED becomes darker, switches to standby.
• Distorted audio. No channels. Shuts down (intermittently).
• No colour. in PIP. (LT7001 LIFETEC repair tip)
• No function, no LED. Smokes.
• Only rainbow colours.
• No start-up (when cold).
• No proper geometry adjustment for 16:9 screen.
• E/W fault. Excessive horizontal size.
• No start-up. No LED lit.
• No picture. on upper half screen.
• Poor RC sensitivity.
• Poor start up, switches off and starts again immediately.
• Reduced horizontal size.
• No TXT.
• Picture and sound ok after switch on. RC does not react after 60 sec. and switches to standby, LED flashes 3x, no new start possible via RC.
• Vertical lines.
• Beeping when cold.
• Horizontal bright line in upper area, picture is lightly streaky.
• E/W fault, picture is too big.
• Picture width changes during brightness so that there are severe indentations in a 4:3 picture. Picture is distorted at the crossover points in a grid pattern.
• Horizontal size varies.
• E/W fault. Both sides have black indentation.
• No vertical deflection.
• Vertical deflection is intermittently instable or total failure. Fault only occurs after hours or days.
• No degaussing.
• LED flashes.
• Vertical line.
• Switches on and "service sign" appears after approx. 30 secs. Switches off and LED blinks 3 times.
• Picture too big. No E/W correction.
• T504 is S/C, R538 is O/C.
• No horizontal deflection. Vertical line.
• Reduced horizontal and vertical deflection. (LT7001 tip from LIFETEC)
• Picture shifted vertically.
• Loud noise near the line transformer after switch on, then switches off.
• No functions. (LT7001 tip from LIFETEC)
• Picture too large (vertical and horizontal), blurred and streaky.
• Starts up with high current comsumption, builds up HV birefly and then switches off.
• No RC functions. Other functions OK .
• Stations drop out during operation. Intermittently strong moire effect and sound crackling. Intermittently stores channels only up to C06 after search.
• S/C in power supply unit.
• Strong noise from PSU, depending on load.
• Picture appears when switched on from mains switch, instead of going to standby.
• Starts up after replacing the defective horizontal transistor T504 (2SC5858). HV is built up and a spanner appears on screen, and horizontal transistor fails again immediately.
• Hiss in audio. intermittently. (service info for LIFETEC -LT7001)
• Horizontal line.
• No function and the typical tick of a line fault can be heard. Red LED pumps at the rhythm of the chirp.
• No audio from subwoofer intermittently.
• Picture fails intermittently. Sound ok when cold.
• Dead.
• Noise in audio. via speakers.
• Only sound, then flashes 3 times.
• Stuck in standby. (service info for LIFETEC -LT7001)
• Picture shifted to the right.
• Picture is too small and moves every now and then (irregularly).
• No picture. No audio.
• Dead. Standby LED does not light.
• Line output stage starts up briefly, high power consumption (approx. 1A), switches immditately off and standby LED lights up.
• E/W fault.
• Picture too big. E/W fault. No adjustment possible . (LT7001 tip from LIFETEC)
• How to set up appliance that it switches on immediately during mains switch on, no switch on via RC from standby.
• Starts up briefly with a picture. Switches after approx. 5 sec in standby.
• No start-up from standby.
• Defective standby PSU due to overvoltage.
• Vertical deflection IC501 fails.
• Line output stage transistor is defective. May run ok for a few seconds before transistor is destroyed again. Picture is then dented/ folded over.
• Picture white, switches off after 10 secs.
• Bright picture.
• Horizontal bright lines in the picture.
• Horizontal lines.
• Horizontal tearing. at bottom (after a few minutes).
• Burnt deflection plug, line transistor is S/C.
• PSU ticking.
• Very high power consumption at switch on, then line output stage T509 (2SC5331) is defective.
• Line output transistor gets defective again, right after switch on.
• Audio fades and returns frequently via SCART.
• HV builds up briefly, high power consumption, then appliance switches off.
• Dark picture.
• Reduced picture with strong E/W indentation.
• Enter service mode.
• E/W is defective. Intermittently no picture.
• Line output transistor S/C.
• No RC functions.
• Appliance switches on from standby only after repeated switch off/on via power switch.
• Colour appears only after approx. 90 sec. and appliance beeps during this time.
• Bright picture. Switches off by itself.
• Dead. Standby LED lit .
• Intermittently switches off by itself and switches on again. Black horizontal lines can be seen before that, which become wider downwards. (LT7001 tips)
• Blurred picture after operation while, then picture drops out and reappears automatically or knock sensitive. Sound OK.
• Loud noise.
• Picture consists of 2cm x 2cm coloured diamonds via AV2 socket.