Question about ViewSonic G790 19" CRT Monitor

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G790 HV xformer wanted.

Are parts (HV xformer) available for G790 19" CRT?

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Re: G790 HV xformer wanted.

Yes, purchase it from company or change the part with some other parts

Posted on Jan 26, 2008

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I hv lg 700s studioworks crt monitor... i hv set a resolution of 1280*1024, but now m not able to control some of its functions like its width size...width has gone out of the monitor, it isnt getting

Select reset option by monitor menu, set it to default first. Then try to adjust the width and height of the screen. If this does not help you, try other resolutions set by the system.

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My HP flat screen (crt) screen is getting dark

If the brightness control is set to maximum and the picture is still too dark, two things might be happening. The CRT picture tube may have deteriorated over time, and/or the high voltage circuitry inside the monitor is failing to deliver enough HV to the tube.
In both cases theoretically it can be fixed (the CRT tube replaced with a new one, and the HV part cleaned of dust residue and repaired), but most probably it would cost not much less than purchasing a modern LCD monitor...

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19" Iiyama HM903DT A Vision Master Pro 454 not detected

Try downloading and installing drivers.

I found some here:

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Screen problems

Check TRC heater voltage (6,3 V., pins 3-4 of TRC socket counting counterclockwise) when picture goes off; if there's no voltage but it appears when picture comes back, look for bad solder joints tracing the circuit backwards to the power supply. Usually, the 6,3 V. tension comes from a single diode-electrolitic cap circuit at the secondary of the power supply transformer.or check this
Pin assignment for a monochrome 9-pin D connector are:
1, 2: Ground
3, 4, 5: not connected
6: intensity control (contrast)
7: video signal input
8: horizontal sync.
9: vertical sync.
Video monochrome cards usable are:MDA (monochrome display adapter) HGA (Hercules graphics adapter) -Some CGA (Color graphics adapter) and EGA (enhanced graphics adapter) cards that have a switch mono-color can also be used.

Jan 26, 2008 | ViewSonic G790 19" CRT Monitor

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your monitor CRT gone bad.

Jan 20, 2008 | ViewSonic G790 19" CRT Monitor

1 Answer

Da?±a el transistor horizontal


El transistor de salida horizontal es un 2SC5331 (Q303). Por favor también compruebe el transformador Flyback (FEA661).

Estará bien comprobar también Q103 (IRF740) que es el regulador de recorrido HV. En algunos casos, D123 defectuoso en el recorrido G1 puede causar el HOT a corto.

Un diagrama esquemático / manual de servicio está disponible aquí.

Tengo que hacer el uso de trnaslator en línea para contestar a su problema.

Buena suerte y saludos cordiales.

Jan 04, 2008 | ViewSonic G790 19" CRT Monitor

1 Answer

Monitor cable

Aarti Services
Flat No-2, C.J Apartment
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Dec 27, 2007 | ViewSonic G790 19" CRT Monitor

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Need help finding replacement monitor cable

what color are the ends of the cables, blue you need a vga cable, white a DVI cable- there are two types of dvi cables look at the connector if it has a plus sign in it you need a dual link otherwise a single.

Oct 26, 2007 | ViewSonic G790 19" CRT Monitor

3 Answers

Arcing around neck board

sounds like bad crt if you saw arc inside economical fix-replace the monitor

May 30, 2007 | Likom ViewMate LP995 (White) 19 in.CRT...

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