| Author |
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| thefixer |
 Posted: Tue May 05, 2009 8:28 pm Post subject: Re: problem of EW |
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| thefixer wrote: |
| THANKS A LOT TORBJORN for help!your explanation are so important. this is my email for comunication :[email protected]. |
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| thefixer |
| Posted: Tue May 05, 2009 8:25 pm Post subject: problem of EW |
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| THANKS A LOT TORBJORN for help!your explanation are so important. this is my email for comunication :[email protected]. |
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| torbjorn |
| Posted: Tue May 05, 2009 7:57 am Post subject: |
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If the E/W correction is made by a diode modulator, first check both diodes and the capacitors parallel to them. It is very important that those diodes are of the correct type, parameters like recovery time and so on must match those of the original diodes. Slow diodes intended for mains rectifiers will not work as E/W diodes even if their voltage and current ratings are correct.
Also, it is common that components connected to the midpoint between the diodes fail. In many cases there is a fusible resistor, or it might be a coil that can get overheated. The modulator driver - usually a small power transistor or an IC, can also get damaged.
If there is a coil with adjustable core in the E/W circuitry, you should after repairing the fault make sure that it is correctly adjusted (refer to the service manual for the chassis). |
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| thefixer |
| Posted: Sat May 02, 2009 9:54 pm Post subject: E w problem |
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thanks ,so i have to check every componet there it may be capacitor resistor etc....is there any special component which is responsible for this problem.any why i try to replace any componet i doubt.thanks again for explanation.  |
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| jts1957 |
| Posted: Sat May 02, 2009 7:46 pm Post subject: |
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| Quote: |
| Pincushion distortion is a common type of distortion in CRT monitors in which horizontal and vertical lines bend inwards toward the center of the display. The distortion is most noticeable at the edges of the display. Pincushion distortion is a divergence from the rectilinear projection in geometric optics where image magnification increases with increasing distance from the optical axis. |
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| thefixer |
| Posted: Sat May 02, 2009 7:26 pm Post subject: E W problem |
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what's the relation ship between "pincushion" and East west problem?  |
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| jts1957 |
| Posted: Sat May 02, 2009 5:36 pm Post subject: |
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It is NOT:
A pincushion (or less commonly pin cushion) is a small cushion, typically 3-5 cm across, which is used in sewing to store pins or needles ... |
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| thefixer |
| Posted: Sat May 02, 2009 3:14 pm Post subject: EWproblem |
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| hello every one ! i am not good at english that's why i can say it in french ,is it " court circuit".thanks for appreciation. |
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| Justmanuals |
| Posted: Sat May 02, 2009 12:51 pm Post subject: |
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How is it that you were able to change a horizontal transistor but you don't know what the 'pincushion' effect is? I'm not a TV tech and I know what it is. Google it.
[email protected] |
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| thefixer |
| Posted: Sat May 02, 2009 12:32 pm Post subject: e w problem |
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| what do you mean by "pincushion" could plz explain more.thanks in advance. |
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