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aleksazr |
Posted: Mon Mar 14, 2016 12:46 pm Post subject: |
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Now I have another problem with the same monitor:
https://www.youtube.com/watch?v=15PMwB8SENA
(that's my finger at 0:23 on the right)
The line is either at that position or close to the bottom,
but can also appear anywhere in between.
Is the fix as simple as replacing a cap?
hitting the monitor with my hand does not help |
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jts1957 |
Posted: Tue May 05, 2015 8:18 pm Post subject: |
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I usually go with no more than double the original. |
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aleksazr |
Posted: Tue May 05, 2015 7:28 pm Post subject: |
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Ha, it works! It's alive!
It was 100uF 50V, which I didn't have so I've placed 100uF 350V,
a really big one
Thank you all once again! |
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aleksazr |
Posted: Tue May 05, 2015 1:51 pm Post subject: |
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That's great! Thanks to both of you. |
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torbjorn |
Posted: Tue May 05, 2015 12:34 pm Post subject: |
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Yes, it is that IC. If you look at the schematics at page 3 and 4 in the data sheet, you see the capacitor connected between pin 3 and 6. |
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aleksazr |
Posted: Tue May 05, 2015 11:48 am Post subject: |
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jts1957 wrote: |
Possibly IC401(LA7841L) ? |
I've found IC401, but it is TDA9309 not LA7841L.
Is that the one? If so, is it between pins 3 and 5, or 3 and 6?
If it is, I'll have to unscrew every screw there is |
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jts1957 |
Posted: Tue May 05, 2015 10:18 am Post subject: |
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Possibly IC401(LA7841L) ? |
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torbjorn |
Posted: Tue May 05, 2015 9:38 am Post subject: |
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No, none of these. I think it should be placed on the main PCB, not at the CRT socket. The casing is probably similar to that of the LM2402. |
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aleksazr |
Posted: Tue May 05, 2015 8:21 am Post subject: |
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torbjorn wrote: |
No, i think the vertical output IC will be a single-in-line part with about 10 pins, mounted to a heat sink. Probably you will find it near the wiring to the deflection coils. |
This one?
http://www.ti.com/lit/ds/symlink/lm2402.pdf |
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aleksazr |
Posted: Tue May 05, 2015 8:13 am Post subject: |
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The DIP40 is actually DIP56 ST72771N9B which is a MCU.
There is also this one M35071
There is one more IC that I can't get to, yet. |
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