TM4215PNLD / TARGA [17" monitors]

• Stuck in sleep mode. Amber light lit on power supply.
• Requires 2 attempts at start up until high voltage and drive remains stable. Horizontal output stage and control were defective. (TM4215PNLD tips)
• Q109 ist defective.
• No picture.
• No function. PSU voltages are present.
• Power up is slow.
• Occasionally horizontal deflection fails. Knock sensitive.
• Failure of the power supply.
• Picture is white with flyback lines.
• Vertical collapse.
• High voltage cuts out (x-ray).
• Q109 blown again after replacement.
• Resistor burned connected to J187 and J188 and pin 4 of FBT. (TM4215PNLD TARGA repair tip)
• Dynamic focus fair.
• Screen is narrow in windows.
• Brightness and picture definition change sporadically after replacing line transformer.
• Shuts down.
• PSU fails.
• R177 and R181 are burnt.
• Red is intermittent.
• Picture is too high.
• Horizontal hold regulation adjustment.
• Relay clicks, no start up of unit.
• Line end stage transistor fails after approx. 1hr operating time.
• Dead.
• On both sides horizontal foldover. Vertical streak.
• Picture is 5cm too narrow. Can be adjusted horizontally in position and width.
• Picture is shifted to the left (picture width adjustment is ok).
• LED is yellow. No high voltage fired intermittently.
• Vertical reduces to 50% after appliance has warmed up.
• Vertical flyback lines.
• Slightly out of focus.
• Dead. Relay clicks.
• Dynamic convergence regulation.
• Intermittent colours. Unstable brightness and screen controls.
• Mode does not work when changing from Windows to DOS.
• No horizontal synchronisation.
• Excessive horizontal size.
• No vertical synchronisation.
• No picture, only black screen although power comes on.
• Vertical line.
• Specifications.
• Dead. Chirps.
• No function when changing to DOS from windows.
• Narrow screen.
• Switches off after building up the high voltage.
• Reconfirmation of H-phase regulation.
• Banging noises from monitor. Fuse and perhaps fuse for external 220V circuit fail immediately.
• Intermittent high voltage. LED is yellow. (TARGA - TM4215PNLD information)
• No high voltage. Power LED on.
• Main power supply does not work, only green LED. (TM4215PNLD tip from TARGA)
• Main PSU dead, LED okay. (TM4215PNLD tip from TARGA)
• Popping and smoke.
• High voltage comes for a short time then switches off.
• Picture gets smaller sporadically; mainly in cold conditions.
• Picture width is too large, no adjustment possible, picture is also too large, if the E/W coil is O/C.
• No functions.
• Picture too narrow with wavy lines.
• Focus adjustment.
• Picture is compressed on the right.
• Colours are intermittent. Unstable screen and bright controls.
• Regulation of H centre, H phase, H size, V position, V size and V linearity.
• High voltage flashovers in the picture tube base (focus connection).
• Horizontal shift is loose (picture jitter to and fro). 12V voltage pumps slightly.
• Regulation of hi-voltage.
• HV switches off.
• No function, line output stage is defective.
• Regulation of horizontal frequency under free run.
• Line blows again after 1-2hrs.
• LOPT is defective.
• Intermittently raster goes wide at top and narrow at bottom
• Reconfirmation of H-size regulation.
• Brightness control is weak or is absent.
• High voltage pumps for a short time and switches off.
• Q109 S/C. No Fb+. No pulse at P3.
• Regulation of white balance.
• Regulation of geometric distortion.
• No picture. "Out of range" on display.
• E/W stage is defective.
• Completely dark picture. White pixels are black.
• Vertical lines tear easily, especially with low resolutions.
• CG regulation.
• Picture slow to appear.
• Insufficient width in Windows.
• Dead. Clicking.
• Picture distortion in the top part, if appliance is operated for a longer time in high resolution.
• Horizontal linearity fault. (service info for TARGA -TM4215PNLD)
• Focus regulation.
• No high voltage although power LED is lit.
• Frequency to voltage regulation.
• E/W adjustment range is too low.
• Vertical jitter. (TM4215PNLD TARGA repair tip)
• Poor colour.
• No start-up.
• Single horizontal line.
• High voltage increases then falls, picture absent, 68-73Vdc on horizontal output stage.
• Power supply problem.
• Main PSU pumps, green LED is on.
• Colour fades in Windows.
• Pincushion and distortion.
• Horizontal deflection fails when switching over to 640x480.
• No HV.
• No function, no +12V operating voltage. (service info for TARGA -TM4215PNLD)
• High voltage for a short time at switch, then no drive. (service info for TARGA -TM4215PNLD)
• Linearity fault in VGA. (TM4215PNLD tip from TARGA)
• Transistor 2SC4747 in the line output stage fails repeatedly after operating for a few days. (TARGA - TM4215PNLD information)
• No horizontal brightness. Vertical line half inch wide.
• No high voltage, only PSU ok.
• High voltage is absent, power LED on.
• Picture width is too large. E/W is distorted.
• Relay making a clicking noise. No start up.
• No colour.
• Output stage transistor Q109 (2SC4747) in high voltage section is defective.
• Only high voltage at switch on then no drive.
• Intermittent loss of one or more colour.
• Flyback lines on the screen.
• Horizontal output transistor (2SC4747) runs hot.
• No R, G, B colour video.
• One colour missing.
• Flashing display.
• Fine adjustment of the geometric distortion.
• No raster.
• Horizontal output transistor burns regularly.
• Regulation of white balance and brightness.
• Statistic convergence regulation.
• After some time picture turns green.
• Horizontal pulses.
• Pincushion distortion. (TARGA - TM4215PNLD information)
• Horizontal foldover on both sides. Vertical streak.
• Picture is narrow. (service info for TARGA -TM4215PNLD)
• Longitudinal controller coil is burnt, line stage TR is S/C.
• High voltage fails if appliance is warm. only with a higher resolution.
• Picture gets blurred with increasing brightness. Focus control and screen control influence each other i.e. if set to sharp, picture gets darker.
• Position of R117.
• Narrow screen in Windows in low resolution. (TM4215PNLD tips)
• Powers on. High voltage absent. Chirping noise.
• Picture width is insufficient.
• Bad E/W. (TARGA - TM4215PNLD information)
• Occasionally colours fail.
• Picture fails horizontally, forms again then fails again.
• Q301 blown.
• Sparks from the CRT base.
• Monitor remains in sleep mode. Amber light on power supply.
• 2cm wide line 10cm from the left edge of the picture with 640x480 resolution.
• Defective line transformer - secondary fault. (TM4215PNLD tip from TARGA)
• Bright picture.
• Power switches on and off. Picture breathing when on.
• R177 burned repeatedly.
• Picture linearity is too narrow on both sides but ok in the middle.
• Intermittently no green.
• Vertical lines distorted in the top 1-2CM.
• Horizontal pulses at sides.
• No brightness control.
• No picture. No horizontal deflection.
• Flashovers in the picture tube socket.
• No picture, whistling.
• Shutdown of the high voltage (X-ray).
• Slow power up.
• Picture shifted completely to the left and adjustment does not react.
• Picture is much too bright and brightness cannot be controlled.