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I want 2 set up a digital picture studio but no money, but i hv all d skills

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You have to go out and show your skills,or you ask for loan or grant to start up.ok

Posted on Aug 06, 2010

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Posted on Jan 02, 2017

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Every picture I take has a line going through every picture


Have you checked you lens, there could be a hair line dust scratch on it. Or you have it set on a setting that helps with leveling...yes camra's do have them.

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There is a wave/bow in the bottom and top of the picture on the screen of my Toshiba 70HX50. When I am in the grid screen in the service mode, it looks like the center is 'bowed' out. How do I adjust this...


Slight error in the alignment of a projection TV is pretty much normal. If the problem cannot be seen on a normal TV picture, I would not spend the money.
However, if the problem is severe and causes colour double images, it is convergence and will need parts replaced - about $200-$600 depending on service call, parts, labour, etc.
Minor adjustment takes a skilled technician. attempting it yourself will likely cause the set to stop functioning. (Digital adjustment is not forgiving)

Mar 30, 2010 | Toshiba 43H70 43" Rear Projection...

2 Answers

Video file type


Audio Capabilities format: MP3 • WMA • ASF

Video Capabilities format: MPEG4 / WMV


P.S. Daniusoft video converter: help u convert all mainstream videos even HD video, home video, youtube video to Samsung YPT9 Digital Media Player easily


Feb 02, 2009 | Samsung YPT9 Digital Media Player

1 Answer

Under exposed pictures when using studio lighting with 5D


A black shadow at the bottom of the image is usually the result of using a shutter speed that is beyond the max flash sync speed of your camera. The max sync speed of the 5D and 20D is 1/200th. In a studio setting with wireless triggers there can be additional latency. Try using a shutter speed of 1/125th and see if that clears it up. You may be able to push it a little higher as pocket wizards are very good wireless triggers but don't use a shutter speed above 1/200th.

Jan 27, 2009 | Canon EOS-5D Digital Camera

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TV TURNS ON BUT NO PICTURE


if your are able to open and close the dvd and able to hear the tv clike it means you secondery power supply is working you have the +5 volt and some other votege
i will look in the hv section and see if you have +120 v
you may have hv short

Nov 24, 2008 | Apex Digital GT2015DV 20 in. TV/DVD Combo

2 Answers

Picture quality


I don't know your model of set very well. I will comment in general. I am assuming your set is using three CRT's for its projection system.

This is normaly a voltage regulation fault. As the CRT's pulls more current, the HV is dropping. A lower anode voltage means lower cathold current. What this does is lower the mass of the electron beam that is hitting the front phosphor in the tubes. Because of the lower electron mass, the deflection yoke has an easier time to pull or deflect the beam for scanning. And, thus the picture appears to increase in size.

If you look at low cost CRT TV sets, it is very common that the raster changes size a little with contrast and brightness change. This is because they use less quality of HV regulation.

Check the main power supply to see if it is stable with wide variation of picture contrast. Also, if you have an HV probe, check to see if the HV at the anodes of the CRT's is stable with changes in the picture contrast and brightness.

If the main power supply is stable, and the anode voltages are changing, then I would try the HV multiplier and flyback assembly.

This can also get a little complicated to troubleshoot. There is some regulation feedback reference from the HV drive that goes back to the HV generator circuit. There may be a fault in this area as well. Where this gets interesting to troubleshoot is where the horizontal scan drive is also the HV drive, as like most common CRT sets.

Some sets use scan compensation to also help for stability. They will control the gain of the scan amplifiers to help stabilize the scanning to make up the error difference in the HV regulation.

Jerry G.


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Philips 60pp9202 sound no picture


The quick answer to you problem is critical in what your set was doing prior to it shutting down. Do you remember it having a Color problem like alignment of convergence? Was the sound cutting out on you? Or was there part of the picture missing? If one of these then you could eliminate time and money. To be honest you would save money DIY. You also can call PTS at 18008447871 and get the price on Deflection board or Large Signal, whichever has High Voltage Transformer on it and price. This will save time1.gif troubleshooting2.gif, because it takes the knowledge of knowing voltages, components, etc. Which require skills the average person may not have. Hope this helps!

Oct 04, 2007 | Philips 60PP9202 60" Rear Projection...

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