GDM2040 / ELSA [20" monitors]

• Vertical convergence has shifted.
• EHT comes up for a second, then dies.
• Specifications.
• Blurry picture. in the centre.
• CENT lights and both right LEDs flash.
• Dead. Front panel LEDs flash.
• Trembles horizontally.
• After changing IC801, high voltage for 2 secs then the power- and saving LEDs flash. Geom LED is on.
• No functions.
• Does not switch on, power LED flashing.
• Switches off by itself. after start-up. (GDM2040 ELSA repair tip)
• Both LEDs flash.
• Keys do not function (except power).
• Picture shifted horizontally. on the right.
• Switches on and off again immediately. Error message and size LED light up.
• Builds up high voltage for a short time and then goes into error mode. Centre LED is still lit and power LED and power save LED flash.
• Slight flickering at the bottom side edges. Hardly visible.
• High voltage builds up at the moment of switch on. Error message: PowerSave Cent.
• Bright picture. Flyback lines.
• Strong line tearing on the whole screen. Vertical lines are zigzag.
• Starts up for a short time, high voltage builds up. After 5 mins appliance switches to standby. Mains voltages fall to approx 1/3 of their normal value.
• No synchronisation.
• No picture. Power and Power-Saving LED flash. CENT-LED lights up.
• Green and yellow LEDs flash. Geometry LED lights up permanently.
• Switches off and yellow LED flashes.
• In shut down mode but centering and power saving LEDs lit.
• After switch on high voltage is built up for a short time. H stage build up and mains chopper transformer hisses.
• Adjustments for the picture geometry are lost after changing the mode.
• Picture grows dim after some time then finally disappears.
• Terminals.
• Protection mode activated. after start-up.
• Switches off immediately. Power Save and Centre LED light up.
• Line output stage is defective.
• Supply voltage for the line end stage is not switched through via Q804.
• Picture shrinks, popping, dies and also smells. (ELSA - GDM2040 information)
• Picture is slightly blurred at the edge and picture position is wrong.
• Dark picture.
• No picture due to loss of CRT heater voltage. (GDM2040 tips)
• Vertical smearing in middle third of screen.
• High voltage builds up for a short time. Error message Cent LED on. Power-Save and Power-On flicker.
• Screen is dark, green power LED on, otherwise no error message.
• Goes into Geo fault.
• White screen. Flyback lines. (GDM2040 ELSA repair tip)
• Switches to protection mode.
• Line collapse, dim vertical bar (5mm wide, 1/3 of way from left). Visible on white raster at 640x480 and 1024x768.
• Horizontal shift, centering control does not function properly.
• Q511 is defective. Appliance does not yet function. High voltage builds up then goes down again. Goes into power save mode. Green LED goes out. Orange LED lights up.
• No horizontal deflection. Error mesage: Power Save Cent.
• No raster.
• Switches off. GEO LED lights up.
• Bright picture with flyback lines. No picture content.
• No horizontal deflection. No operating voltage. Error message: PowerSave Cent.
• Poor picture.
• No HV and LEDs flashing.
• Starts up for a short time then switches at once into power save mode.
• No HV, GEO-LED is constantly on. H-drive pulse from the N-board only for 0.5 sec., then it disappears.
• No HV. after a while.
• Switches off. Mains LED flashes green, Power-save LED and Cent-LED flash orange.
• Goes on for a short time then goes into power save.
• Squealing noise.
• Q512 (SC3998) and Q511 are S/C.
• Power supply voltage are too low (55V instead of 144V). Power and Saving LEDs flash and geometry LED is on. LOPT ok.
• Power Save and Centre LEDs light up.
• No vertical synchronisation. (service info for ELSA -GDM2040)
• Deflection fault, error message: Power Save Cent.
• Starts up and shutsdown. Power and power save LED's flashing.
• High voltage builds up for a short time and then switches off.
• At the moment of switch on high voltage build sup then appliance switches off.
• Switches off immediately. Power LED, power saving LED and geometry LED flashing.
• Cloud of smoke from the line output stage.
• High voltage builds shortly up, then error report. Geometry LED and Power save + on LED flash.
• Centre LED on. Powersafe LEDs flash. High voltage is built up for a short time.
• Power- and saving-LED flash. Geometry LED is on. LOPT is not defective. No voltage at line end stage.
• No picture. High voltage and power save light on.
• Q511 blown again after replacement.
• Repeatedly blows IC404.
• Gives off smoke.
• Short peeping at switch on. Finally Power and Save flash- Geo LED lights continuously.
• No dynamic focus. Fuzzy horizontal lines in centre of screen.
• High voltage builds up to 27100V auf. After 5 secs switches to power save. No LEDs light up.
• No HV.
• Vertical lines are sometimes duplicated.
• Vertical roll.
• No horizontal synchronisation after switched-on for 30 minutes.
• Shutsdown. Flashing orange light.
• Blurry picture. on the left (at bottom).
• Power-Save LED is on.
• Picture is completely blurred on the right, if focus control is turned, picture can be sharpened on the right then however the middle is blurred.
• LEDs flash.
• Shuts down.
• No start-up.
• Keine H-Ablenkung, Betriebsspannung fehlt. Fehlermeldung: PowerSave Cent.
• Error message: PowerSave Cent. At switch on high voltage builds up. (GDM2040 tips)
• No HV. Geometry light, power/saver lights flash.
• Error codes.
• Switches off by itself. after a few seconds. (GDM2040 tip from ELSA)
• Goes into Power Save. Geometry LED is on.
• Picture shifted to the left.
• No vertical deflection.
• IC801 (CMOS4049) fails when there are high voltage flashovers.
• Picture is unstable when switching from TXT to Graphics mode and when going from a low to high resolution graphics mode or in reverse.
• Error message: both LEDs flash on the right. CENT lights up permanently.
• Excessive brightness. Flyback lines.
• Shuts down (after a few seconds). (service info for ELSA -GDM2040)
• PSU whistles and does not oscillate.
• Appliance goes into power save mode.
• Picture absent, high voltage missing, geometry light on, power save and power light flash. (ELSA - GDM2040 information)
• Switches off after the slightest shake (at almost every site). Only by switching on again is the picture sporadically present again.
• Switches on, HT builds up briefly, then it switches to power-save. LED is on. No picture.
• Discharge of the tube. (GDM2040 tips)
• No adjustment of horizontal, pincushion and keystone balance. Defective horizontal, centering and dynamic focus.
• Power and power LEDs flash and geometry LED permanently on when mains cable inserted.
• Dead.
• Goes into standby, centre LED is on.
• Geometry error message.
• Power save and Standby flash. Geometry light permanently.
• Screen is dark, high voltage for a short time and finally appliance jumps into power save mode.