I have a problem in the settings of pincushion, trapezoid, pin-balance, parallelogram and rotation of my aoc 7vlr crt monitor. please help. thanks and GOD BLESS ! ! !

CRT half baked along with controller, you can get new monitors pretty cheap at superwarehouse.com

The problem could be in the Monitor, Computer or Cable. Did you try to connect another monitor or can you try to connect another computer (maybe a laptop) to that monitor?
It's important to understand where to start.
Thanks

Most CRT monitors have buttons on the front of the monitor select a menu to adjust various settings such as the trapezoidal, pincushion, vertical and horizontal height size and position, brightness and contrast etc.

Try to do a factory reset (look up "recall" in the manual, or here: http://support.dell.com/support/edocs/monitors/e773c/EN/ug/setup.htm).
If this does not help, you need to adjust the geometry settings (H/V position, H/V size, rotation, trapezoid, parallelogram, pincushion and pin balance) using the monitor's settings menu. Expect a long afternoon of fiddling around until you get a satisfactory result. A test picture for geometry settings could be of help.

Make sure your computers video setting does not exceed the monitors specification of 1152 x 864 @ 75 Hz.

CRT Type 19" (18.0" viewable), 90º deflection, PerfectFlat CRT Dot Pitch .25mm aperture grille at center, .27mm aperture grille at corners Phosphor RGB B22 medium-short persistence Glass Surface Tint: TM~43.5%, anti-reflection, anti-static with AR film INPUT SIGNAL Video RGB analog (75 ohms, 0.7 Vp-p) Sync H/V separated (TTL), composite Frequency fh: 30~110kHz; fv: 50~160Hz COMPATIBILITY PC VGA up to 2048x1536 Mac®* Power Mac™ G3/G4 up to 1920x1440 CONNECTOR Signal 15-pin mini D-sub Power 3-pin plug (IEC320) POWER Voltage AC 90-240VAC, 50-60Hz (+/-2)Hz Consumption 97W (typ) CONTROLS Basic Power, 1, down, up, 2, UltraBrite™ hot key On View® Contrast, brightness, H. size, H. position, V. size, V. position, pincushion, pin balance, trapezoid, parallelogram, rotation, degauss, moir reduction, H. convergence, V. convergence, ViewMeter® language, ViewMatch® color, data recall and zoom VIDEO INPUT Bandwidth 285MHz MISCONVERGENCE 0.25mm (max) at center
0.35mm (max) at corners DISPLAY AREA Factory Setting 353mm x 265mm (V) (typ) Maximum Scan 367mm x 275mm (V), dependent on signal timing used OPERATING CONDITIONS Temperature 32-104º F (0-40º C) Humidity 5-95% (non-condensing) DIMENSIONS
(WxHxD) Physical 18.8" x 17.9" x 18.5"
480mm x 456mm x 470mm WEIGHT Net 51.7 lbs. (23.5 kgs.) Gross 58.3 lbs. (26.5 kgs.) WARRANTY Three-year limited warranty on CRT, parts and labor. REGULATIONS UL/cUL, FCC-B, CB, CE, DHHS, ICES 003, ENERGY STAR®, NOM, TUV/GS, TUV/Ergo, NEMKO, SEMKO, DEMKO, FEMKO, GOST-R, SASO, PCBC, VCCI, BSMI, CCC, PSB, C-tick, Argentina-TUV/S, TCO99 (P95f+B) TCO'03 (P95f+) POWER MANAGEMENT Meets TCO'99 (P95f+B),TCO'03 (P95f+)and ENERGY STAR standards

nHCM782 TRAPEZOID AND INCUSHION FUCTION IS NOT WORKING

Good morning! kindly try the following:
-mouse pointer on the screen, right click the mouse, then click the Properties, then click Settings tab, then click Troubleshoot or Advance which will guide you in setting your screen display. best regards.

one of the buttons on your monitor is partially shorted. trust me, ive encountered this problem many times.

Horizontal output transistor is shorted or flyback problem

Hello,

You want to recall the factory settings. There should be an entry in your menu for this. Sometimes its clearly indicated as 'reset' sometimes it is a word that means much the same, such as 'recall'.

The numbers you posted that have a 'K' at the end are settings for the white color temperature. This is an old label from the early days of TVs. One is better than the other for graphics vs clarity. Usually you want the higher setting.

Other wise, if you can't locate the reset option. Go into each setting for Contrast, Brightness and set Contrast 50 and Brightness 100, the others affect the position of the display and how square it is. Set all those values for trapazoid, etc to 0.

Anything else you need clarification on please comment back and I will validate or correct your instincts on what is the reset option command if you are unsure about what is being displayed.

Regards,
Worldvet