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Monitor Make AOC AOC AOC AOC AOC AOC AOC AOC AOC AOC AOC AOC AOC AOC AOC AOC AOC AOC AOC AOC AOC AOC AOC AOC AOC AOC AOC AOC 4L 4L 4L 7H

Monitor Model

Problem BRIGHTNESS CONTROL INOP DEAD, FUSE OK LOSS OF HORIZONTAL SYNC EXCESSIVE BRIGHTNESS, RETRACE LINES, BRIGHTER ON ONE SIDE MONITOR IS LOUD/WHINY (AUDIBLE NOISE) WILL NOT POWER ON...POWER INDICATOR IS LIT EGA TOO WIDE EGA TOO WIDE MONITOR IS LOUD/WHINY (AUDIBLE NOISE) DEAD DEAD NO DISPLAY/VERTICAL DEAD MONITOR IS LOUD/WHINY (AUDIBLE NOISE) DEAD LOSS OF SYNC BLOWS VIDEO IC LOSS OF SYNC WHEN COLD HV TOO HIGH HOT FAILURE DEAD NO HORIZONTAL HOLD BAD SYNC LOSS OF HORIZONTAL SYNC HOT BLOWS HV TOO HIGH GARBAGE ON SCREEN HORIZONTAL DISTORTION

Solution CHECK R-716 FOR OPEN CHECK A/C SWITCH FOR OPEN BAD IC201 CHECK C810 ON CRT BOARD 100UF/50V HITEMP SILICONE UP L804 REPLACE D603 AND FUSE F600 Q521, Q515, D522 (ECG552) Q521, Q515, D522 SILICONE UP L804 IN P/S CHECK D920 ECG576 (6V LINE IS DEAD) IN P/S CHECK Q901 ECG2333 AND R907 .22 1W VERTICAL YOKE SOLDER JOINTS SHORTED BY LUG ON BASE...CHECK ALL SOLDER ON YOKE IN P/S CHECK C914, C917, C919, Q901 ECG2333, R907 .22/1W SILICONE UP L804 CHECK ALL C512, C542, ZD503, Q510 2SB861, Q502 2SC4742 C512 100/50 AND ALIGN REPLACE IC301 LM1203N...ALIGN (USE M624 CHASSIS MANUAL) ADJUST VR311 TO .5VDC, ADJ VR501 FOR STABLE IMAGE, ADJ VR505 FOR STABLE IMAG IC303 BAD (ECG943M) CHECK ALL: Q502, Q510, C512, ZD503(12V), C542EC303, C515,L02 196MH .26, C528 CHECK SOLDER AND C512 ALIGN, SOLDER UP, CHECK C512 100/25V CHECK C512 AND ALIGN CHECK C312 100/16V AND ALIGN Q502, Q510, Q512, ZD503, C542, IC303, C515, L02, C528 (CHECK ALL) IC303 ECG943M CHECK IC403 LA7851, C408(C271) C812 100/16V

ALL MODELS C142 CM-312 CM-312 CM-312 CM-312MG CM-333 CM-333 CM-333 CM-335 CM-335 CM-335 CM-335 CM-335 CM-335 CM-335 CM-335 CM-335 CM-335 CM-335 CM-335 CM-335 CM-335MG CM-336

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file:///F|/Computer_Monitors/Monitor Repair Tips-AOC.htm

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CM-336CD CM-336CD CM-346 CM-536 CM-536 CM-735 CM-735 CM-735 CM-735 CM301TG CM301TG CM323MG CM323MG CM323MG CM323MG CM333MG CM333MG CM335 CM335 CM335 CM335 CM335 CM335 CM335 CM335 CM335 CM336 CM336

SHUTS DOWN WHEN WARM DEAD SCREEN SHIFTS LEFT WIDTH PULLED IN, PINCUSHION BAD RIGHT SIDE VIDEO POOR, BLOWS HOT REGULATION FAILURE DISPLAY FLICKERS NO HIGH VOLTAGE DEAD WITH TIC/TIC SOUND DEAD. NO RASTER DEAD. NO RASTER DEAD. NO RASTER DEAD. NO RASTER DEAD. NO RASTER HORIZIONTAL BLOWN DEAD WIDTH SHRINKING DEAD, POWER SUPPLY BURNED CONTRAST POOR, PIX DIM SYNC INOP ON LOW RESOLUTION PIX DRIFTS TO THE RIGHT AFTER WARMUP HORIZ OUTPUT TRANSISTOR SHORTED CONTRAST POOR, WON'T ADJUST HORIZ SHRINKS,VERT COLLAPSE,COMES BACK EXCESS CURRENT, H.O.T. DEAD. HORIZ SYNC INOP WHEN 1ST TURNED ON, PIX JITTERS HIGH VOLTAGE INOP DEAD

C812, ADJUST HOLD DOWN TP TO 8VDC CHECK D922 IN 24V (ECG576) SOLDER UP AND ALIGN. Q803 2SC3688 (ECG2354), C812 100UF/35V USE 105 DEGREES C - REPL BAD C812 C837 C866, C821, C824 FR103(SK9937) C821, C866, C448 MAY BE BAD OR OUT OF TOLERANCE SHORTED D806...CHECK ALSO D805 BAD C980 CAPACITOR IHVT FCO-1445AL, IC1 STK5483, R103 68 OHM 1/2W Q602 2SD1651, C113 & 122 100UF/160V, C613 1UF/160V, R617 OR 614 C901 TIPL760A, C914 & 917 2.2UF/50V IN POWER SUPPLY D502 & 512 MAIN BD R922 5.6 OHM 11.2W C512 AND HORIZONTAL OUT 2SC3688 BAD Q901 2SC3466, C955, C956, C957 100UF/35V, C918 330UF/16V C512 100UF/16V SGSF465 SHORTED. R491, R937, D942/943, ZD951,ZD901,Q921,Q920 PCB CRACKED BETWEEN R308 & J328, REPL R308 CHECK 7.5V ON TP3. ADJ VR311, IF STILL INOP REPL IC301, IC302 & C311 C512 100UF/16V C512 100UF/16V USE 25V 105 DEGREES, Q502 2SC36888 H.O.T. R526 200K 1/2W C512 100UF/16V USE 105 DEGREE REPL Q502, ZD503, D523, IF STILL INOP REPL D953, Q901 MC1391P (ECG815) HORIZ PROCESSOR C920 C921 C946 CHECK ALSO T904 FOR SHORT C812 C816 C729 C730 C731 C709 C710 CHECK AND REPLACE

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CM336 CM336 CM336 CM336MG CM336MG CM346 CM346 CM346 CM346 CM346 CM346 CM346MG CM346MG CM346MG CM346MG CMLB337 M624 MM-413S MM-413S MM413S MM413S MM413S MOST POWER II POWER II POWER II VGA4A

HORIZONTAL SIZE SHRINKING SIZE DECREASES AFTER WARM-UP DEAD RASTER INOP - POWER OK HORIZONTAL SCROLL WHEN WARM FOCUS INOP LOSES SYNC AFTER 2 HR IN SVGA HORIZ HOLD LOSS HORIZ SCROLL WHEN WARM VERTICAL COLLAPSE DEAD DEAD FOCUS INOP HORIZONTAL HOLD LOSS VERTICAL COLLAPSE DEAD. BLOWS VIDEO IC NO INTNSITY, NO VERTICAL NO INTNSITY, NO VERTICAL MONO VGA DEAD MONITOR IS LOUD/WHINY (AUDIBLE NOISE) DEAD LOUD, WHINEY MONITORS SHUTS DOWN WHEN WARM LOSS OF SYNC NO DISPLAY/VERTICAL IMAGE PINCHED IN ON SIDE...FADES AWAY

C810 C812 C816 C815 C811 POSSIBLY BAD OR OUT OF TOLERANCE C816 C812 C811 CHECK AND REPLACE CHECK C812, Q803. CHECK Q911 IF SHORTED CHK ZD905 AND T904 D803 PFR863 WITH ECG577, C302 C221 C218 C201, CHECK ALSO TDA2653 FOCUS PACK TLF02-30A, C434 2.2UF/160V, C433 4.7UF/350V, C838 0.01/2KV IC201 56A517-2 WT8042N32 C23 1UF/50V 105 DEGREES, R217, VR202 REP W/20K POT, 74LS86 C221 1000UF/50V, C218 100UF/25V, C2201 0.1UF/100V TDA2653 IC202 TDA1175A TDA2590 SYNC PROCESSOR TDA2590 SYNC PROCESSOR BAD FOCUS PACK TLF02-30A, C434, C433, C838 (REPLACE) C23, R217, VR202 REPLACE WITH 20-22KPOT, 74LS86 IC202 BAD (TDA1175A) D920 (ECG577), ALSO CHECK ALL SOLDER JOINTS REPLACE IC301 LM1203N CHECK FOR BAD CHASSIS GROUND CHECK CAPS C708, 710, 331, 321, 211, 323, 314, 209, 504, 203, 503, 330 C320 0.01UF, R310 47-1W SILICONE UP L804 R703, R704 BAD SILICONE UP L804 C512, C542 AND CHECK ALL SOLDER CHECK C912 100/16V IN HV SECTION VERTICAL YOKE SOLDER JOINTS SHORTED BY LUG ON BASE...CHECK ALL SOLDER ON YOKE C612 100/16 AND C608 2200/35 BAD

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