1000HS / DELL [17" monitors]

• Dead. No AC reaching main board.
• No picture. Ub HV approx. 20V (normal with 640x480 approx. 32V).
• Access to service mode.
• No picture. Thin vertical red line in the middle of the screen.
• No synchronisation.
• Most sensitive colour adjustment. (1000HS tips)
• S/C in the line output stage. (1000HS tip from DELL)
• No vertical synchronisation. Picture width is approx 1cm.
• Colour varies.
• Picture is too large and too dark. High voltage is too low, cannot be controlled via pot RT5.
• Vertical deflection is shifted towards the top.
• No high voltage. No drive signal from diode 109 for the high voltage (T9).
• Thin red line vertically in the middle of screen.
• PSU is defective, R1 is burnt.
• One colour missing.
• Line output stage is defective. T32 and T27 S/C. R224 O/C.
• Specifications.
• Geometry adjustment.
• Blurry picture. in the centre.
• Brightness varies.
• No functions.
• No start-up.
• Picture is too wide. The lower the deflection frequency, the more severe the E/W fault (pincushion).
• Picture is too dark or no picture.
• High voltage comes on for a short and then switches off, sometimes also high voltage flashover.
• No start-up. Power LED lit .
• Reduced horizontal size.
• Horizontal collapse.
• Low light adjustment.
• Operating voltages adjustment.
• Vertical end stage line. (1000HS tips)
• Horizontal size too small. Slight width changes.
• PSU does not work.
• Horizontal output stage is knock sensitive. Horizontal deflection transistor may fail.
• High light adjustment.
• Type of transistors T21 and T22 at R195.
• PSU does not switch on.
• Replacement type for transformer M3.
• HV adjustment.
• Vertical line.
• Picture is dark, only weakly visible and too large. Ub HV approx. 15V. (1000HS tip from DELL)
• Contrast and brightness pump.
• Wide vertical line.
• Dead. No LED lit (after a while).
• No brightness control.
• Picture gets darker and larger after 5 mins. Changes repeatedly, returns to normal and then goes dark again.
• Focus adjustment.
• Preliminary picture adjustments.
• Horizontal line.
• Picture still only lilac. No green.
• Switches to standby (intermittently).
• Horizontal and vertical overscan.
• Dead. LED is green.
• No horizontal deflection.
• Sync range adjustment.
• Picture width is noisy, flickers.
• No HV.