| Monitor Make | Monitor Model | Problem | Solution |
|---|---|---|---|
| COMPAQ | 420T | VERT SWEEP INOP | 2.2 OHM RES OFF IHVT, SHORTED CAP & DIODE, REPLACE VERT IC |
| COMPAQ | 460P | PIECRUST PIX, DISTORTED PIX | C316 22UF/200V |
| COMPAQ | 460P | QUITS AFTER 2 OR 3 MIN | C815 220UF/25V |
| COMPAQ | 460P | VERTICAL LINEARITY POOR | C609, U501 VOLTAGES WERE OK |
| COMPAQ | 460P | WIGGLES IN DISPLAY | C815. (WAVEFORM AT C303 WILL JUMP VERTICALLY) |
| COMPAQ | 461P | DEAD | R906 0.27-2W, Q902 2SK1044, ZD905 15V |
| COMPAQ | 461P | DEAD | U901 3842N |
| COMPAQ | 461P | HORIZ WIDTH HAS NO CONTROL | R383 2.2-1W |
| COMPAQ | 461P | POWER LIGHT GOES OUT, NO HV | Q809, C815 220UF/25V |
| COMPAQ | 461P | POWER ON, OFF, THEN ON AGAIN, WILL NOT COME UP | LOGIC CONTROL BD. PWR ON LITE GLOWS TO FULL BRIGHT W/POWER CORD DISCONNECT |
| COMPAQ | 472 | BRIGHTNESS CONTROL INOP | R806 2.2-1/2W, D803 RGP15J,R803 1.5K, C802 4.7UF/50V |
| COMPAQ | DESK PRO | LOSS OF POWER SUPPLY AND HV AFTER POWER ON | C407, C412, IC401, IC402, C515, C529 |
| COMPAQ | DESK PRO | NO HV�FUSE F951 BLOWN | C556, D925, AND FUSE PICO 1A�REPLACE |
| COMPAQ | DESK PRO | DEAD | REPLACE/CHECK ON/OFF SWITCH |
| COMPAQ | DESK PRO | PICTURE IS WEAK�WORSE WHEN WARM | C958 (330/16V) BAD |
| COMPAQ | 420 | NO VERTICAL | REPLACE IC202, R215, R320, R332, D306 |
| COMPAQ | 420T | NO VERTICAL | REPLACE IC202, R215, R320, R332, D306 |
| COMPAQ | 420T | BAD COLOR | REPLACE CUTOFF POST (20K/25K) AND DRIVE POTS (10K) |
| COMPAQ | 420 | G2 LOW/SURGING | CHECK R459 AND FBT |
| COMPAQ | 420T | G2 LOW/SURGING | CHECK R459 AND FBT |
| COMPAQ | 420 | BRIGHT WHITE SCREEN WITH RETRACE LINES | CHECK FILAMENT VOLTAGES IN CRT�REPLACE CRT |
| COMPAQ | 420T | BRIGHT WHITE SCREEN WITH RETRACE LINES | CHECK FILAMENT VOLTAGES IN CRT�REPLACE CRT |
| COMPAQ | 420 | FUZZY, FBT FOCUS AT LIMIT | CHECK IF G2 INCREASES WHEN MOVING FOCUS�IF SO, CRT BAD |
| COMPAQ | 420T | FUZZY, FBT FOCUS AT LIMIT | CHECK IF G2 INCREASES WHEN MOVING FOCUS�IF SO, CRT BAD |
| COMPAQ | 420 | FUZZY, FBT FOCUS AT LIMIT | BAD FBT AND/OR C3883 (ECG 2302 W/DAMPER DIODE) |
| COMPAQ | 420T | FUZZY, FBT FOCUS AT LIMIT | BAD FBT AND/OR C3883 (ECG 2302 W/DAMPER DIODE) |
| COMPAQ | 425 | SWITCH MODE PS WON'T POWER UP | BAD SCR7102 |
| COMPAQ | 411 | VERTICAL LINE | REPLACE C715 2.2/50V |
| COMPAQ | 420T | HORIZONTAL LINE ONLY | R215, IC202 (TDA1170N), DIODE |
| COMPAQ | 461 | NO VIDEO | REPLACE CPU MODULE |
| COMPAQ | 471P | VERTICAL SHRINK, DIRTY | C201, C206, IC602 TDA8351 |
| COMPAQ | 420T | NO IMAGE, HAS HV | CLEAN GLUE FROM G2 CIRCUIT, REPLACE CUTOFF POTS |
| COMPAQ | 420T | NO VIDEO | CHECK IC202, R215, R320, D306, UC3842 |
| COMPAQ | 420T | HORIZONTAL LINE ONLY | BAD VERTICAL IC, DIODE |
| COMPAQ | 420 | NO VERTICAL | CHECK VERT IC TDA1170N, D306 ECG552, R215 8.2/1W, R320 1/1W |
| COMPAQ | 461 | DEAD�NO HV | CPU MODULE |
| COMPAQ | 420T | NO VIDEO | CHECK R459 51K, C429 .01 |
| COMPAQ | 420 | DEAD | CHECK FBT AND CUTOFF POTS, HV TRANSISTOR |
| COMPAQ | 471 | HIGH PITCHED SQUEAL | REPLACE BAD COIL IN HV 10UH�ALIGN |
| COMPAQ | SC-428VX | HIGH PITCHED SQUEAL | REPLACE BAD COIL IN HV 10UH�ALIGN |
| COMPAQ | 420 | BLURRY | FBT, Q511, R5269 |
| COMPAQ | 420 | DEAD | CHECK ALL CAPS ON CRT PCB |
| COMPAQ | 472P | FLICKERED AND BLEW | FBT BAD #47A014 |
| COMPAQ | 450 | DEAD | REPLACE HOT 2SC3996 |
| COMPAQ | 420 | VERTICAL PROBLEMS | CHECK IC202, R215, R330, D306 |
| COMPAQ | 473/E | DISTORTED PICTURE AND NOISE FROM P/S | C804 |
| COMPAQ | 462 | UNIT DEAD SHORTED HOT | |
| COMPAQ | 462 | UNIT DEAD | REPLACE Q405, Q404,Q403,Q402, Q401,18V ZENER,R412,R414 |
| COMPAQ | 462 | WON'T START UP | D927 SHORTED IN SMPS SECONDARY (ECG576) |
***** End of monitor database search *****