Question about Sony PCV-RX770 (T99860944) PC Desktop

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Strobe and darkness on my monitor - Sony PCV-RX770 (T99860944) PC Desktop

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  • zach4460 May 23, 2009

    Hi MNfisherman,



    Thanks for getting back to me and the info. I just put in a new video card in because the old one did **** out. It worked great until I shut the entire system down including the monitor. It just cleared up after around two hours of strbing and getting lighter as time went on. Do you still think it's the monitor or possible the mother board?

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Either the monitor is crapping out or you may need new video card. You can always try to update video card drivers. I also suggest trying a different refresh rate under monitor/display settings.

Posted on May 22, 2009

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I have a Philips lcd 1080p 46". The screen was


Every one of those I have repaired, I had to replace the controller ic on both the slave and master. Monitor the 5 volts on the controller and the output, that's a dead give away. Don't bother with the cf lamps, thats not your problem.

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I received the vivitar dvr 850hd with the 2.4" screen. i can't get the flash or strobe light to work to take pictures or movies when it is dark. is there something special that i need to do to get it...


When in the 'Camera' setting, push the left arrow on the camera to 'Auto' or 'On'. the flash should flash if it is dark enough. also, I don't think you can use the flash when making movies.

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Why would my monitor strobe when started. It will do that for a time, fast, then slow down until it stops. Sometimes it wont even go on, and the 'on' button will go from bright to dark.


It has dying power supply more likley to be due to bad DC filter caps, that will be the first place to look.
If you are going to DIY and have proper tools and know safety precaution then please read on:
Most common failures in the LCD monitors are bad capacitors (bulging top/seal or leaking) in the power supply (they should be replaced in a set), blown fuses; poor solder joints, failed inverter circuits (blown fuse, shorted transistors, shorted/open transformers), bad lamps (poor solder connections or worn out lamps). You will need to open it up and inspect the inside, see example of failed SAMSUNG monitors to get some ideas what to look for: http://s807.photobucket.com/albums/yy352/budm/
Post back what you see inside so we can guide you further and it will help out other people in the future also.

Basic LCD monitor troubleshooting guide:
http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide

Learn about bad caps: http://en.wikipedia.org/wiki/Capacitor_plague

Capacitors kit: http://lcdalternatives.auctivacommerce.com/ he can make you a set of caps for you.

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1 Answer

Ttl auto does not work


Digital Camera Fully Compatible, Newly Developed S-TTL System "S-TTL" enables TTL auto shooting by an external strobe for a digital SLR camera as well as for a point & shoot digital camera.
INON S-TTL auto strobe supports any manufactures' model providing highly accurate exposure control.
Film camera era without strobe selection problem TTL stands for "Through The Lens" and TTL auto strobe system controls flash amount to provide correct exposure based on calculation by camera's internal sensor metering reflecting strobe light from a subject through the lens. This TTL system meters actual light amount reflecting from a subject providing accurate exposure.
When we start with the history of underwater TTL auto strobe, underwater camera?"NIKONOS V" released in 1984 was the first to provide automatic TTL flash control for underwater strobe SB-102, SB-103 succeeded by NIKONOS V compatible underwater strobes form other manufactures. The 5 pin electrical sync connector for NIKONOS V is most popular and widely adopted to connect an underwater strobe and underwater film camera (underwater camera/housing).
A film SLR camera has flexibility to select an underwater strobe. As far as housing has NIKONOS type electrical sync connector and properly wired, automatic TTL flash control is usable with any TTL auto strobe like Nikon SB-105, INON Z-220, Z-22 connected via electrical sync cable.
NIKONOS type 5 pin electrical sync connector and NIKONOS V with INON Z-22 strobe
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Film camera compatible strobe is not usable for a digital camera!? Underwater TTL strobe circumstances have been drastically altered with the spread of digital camera among divers. Some underwater housing for digital SLR camera has NIKONOS type electrical 5 pin sync connector as same as film camera housing. Since the housing has same NIKONOS type sync connector, existing film camera compatible underwater strobe has been considered compatible with a digital SLR camera via 5 pin sync cable but happened to experience error message on the digital camera or blackout on an image even the strobe worked. Why this happened?
This is because automatic TTL strobe system difference between a film camera and a digital camera.

The film TTL auto system makes single flash while digital TTL auto system employs pre-flash type making two to three flashes. Film TTL auto strobe system starts firing at the same time the shutter opens and reflecting strobe light from a subject is recived at a film. The reflecting light on the film is metered by the sensor to determine when to cease firing for correct exposure. This process takes only about 1/1000 second.
In contrast, digital TTL auto strobe system can not calculate adequate exposure based on reflecting light from a subject since image sensor (CCD/CMOS) reflectivity is comparably low comparing to a film. So digital TTL strobe system gives preliminary flash for very short period of time (pre-flash) just before the shutter opens metering reflecting light from a subject by the sensor to calculate necessary amount of light for correct exposure and starts emitting main flash at the same time the shutter opens. Canon E-TTL and Nikon i-TTL employs this system.

When we connect conventional film camera compatible TTL strobe to pre-flash type digital SLR via sync cable, the strobe makes full dump by pre-flash signal then the shutter opens before the strobe has been fully charged resulting in quite under exposed image only with ambient light. Even two time flash compatible strobe like INON Z-220 strobe, does not fully support a digital TTL and force to use Manual flash mode.





Film SLR:
A strobe starts firing at the same time the shutter opens and quenches firing when correct exposure has been obtained.
A film compatible TTL strobe connected to a pre-flash type digital SLR via electrical cable flashes does not support TTL auto exposure resulting in synchronization only with first pre-flash or totally uncontrollable.
white1px.jpg
The birth of digital fully compatible S-TTL S-TTL auto compatible INON D-2000 strobe and Z-240 strobe works in TTL auto mode by simply setting their main dial to S-TTL position. A film camera seems to depend more on photographer's skill, experience and feel since the camera does not allow checking images on site. A digital camera allows us to check images right after shooting and enable to try to shoot again as much as we like. And high capacity memory card further allows to shoot hundreds of images. The digital camera makes entry level of underwater photography getting down and nowadays more people buy a digital SLR camera and underwater housing even they have just started underwater photography. However underwater photography gets more difficult because underwater strobe does not work in TTL auto.
INON is among the first to support digital TTL auto system with "S-TTL" auto mode equipped D-2000 strobe and Z-240 strobe.
The proper name of S-TTL is "Optical Synch TTL". S-TTL enables to perform in TTL auto exposure as same as genuine TTL strobe from camera manufacture, based on camera's built-in flash light to use as a signal to be transmitted to a strobe. S-TTL uses digital camera's built-in flash light not as a light source but as like a controller to trigger S-TTL strobe.
The built-in flash of a digital camera makes weak flash (pre-flash) before main-flash to calculate exposure. This pre-flash is transmitted to S-TTL strobe to control the strobe to make pre-flash to a subject. The reflecting light from the subject goes through the camera's master lens to an image sensor then a processor calculates main flash light amount for correct exposure.?Finally the built-in flash makes main-flash which is transmitted to the S-TTL strobe to cause main-flash of the S-TTL strobe.


Digital camera's built-in flash lights are transmitted via an optical fiber to the
S-TTL strobe to make pre-flash and main-flash instead of the built-in flash.
white1px.jpg

Apr 30, 2010 | Olympus FL-20 TTL Flash

1 Answer

Screen keeps flashing like a strobe light, picture still works though


repair the powersupply off the tubes,
replace 3 elco bethween 47 en 470uF/40V and mesure al resistors if they have the correct value.
these parts schould be near the tube transformer where de wire of the tube are connected
.

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1 Answer

Something is wrong with the display on my Kyocera Strobe K612B. When I open and close the phone sometimes nothing happens but sometimes one of the screens gets distorted. The outside screen is usally the...


This EXACT same problem happened to me and I had to pay $50 to some cell-phone repair guy to replace the whole front piece of the phone....I HATE Kyocera and will NEVER buy ANYTHING from them ever again!

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1 Answer

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The problem is the inverter on your dell monitor this is very comon.

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1 Answer

Flash and dark photos


Hi,
Perform Initialize option in camera menu,
if problem doesn't fix, camera needs Strobe Adjustment and this can be perform in Sony service center because it requires spacial tools.
Thank you.

Sep 21, 2008 | Sony Cyber-shot DSC-W35 Digital Camera

1 Answer

I cant use dsc h1 with strobe light


If you problem is that the double flash triggers the strobes early (on the first flash and the shot is made on the second flash - dark) you either:
1. Get a wire accessory to command the strobes
2. Put a simple external flash on top of the camera and use it to trigger strobes. If you don't need the light from this flash just point it up of backwards, it will still trigger the strobes. If it does not rotate, you can use tin foil. A very simple external flash will do, as the camera will flash only once with external flash.

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