| Electronics > Repair |
| ADVANTEST R9211B |
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| m k:
With those belly up pictures from left of CPU we can try to combine partially transparent ones from under and over, but that's secondary, so don't try to match them to what we already have. More important is to have them. |
| stfjohn:
Sorry, but I didn't understand your answer... |
| m k:
Yes, after checking those previous pictures that became obvious. For other/under side pictures I mean the side where those currently pictured components are not. It used to be a solder side, but now there's solder everywhere. Top side, the side with CPU and stuff is for vertical traces. (PCB text is correctly oriented) Bottom/under side is for horizontal traces. Combining both pictures and making them partially transparent by software we can possibly see better how traces go. You can do the same with physical board, but it's quite big, so it's a bit difficult and can lead to dizziness. There you put the PCB on it edge and look both sides by swinging your body, the PCB or both. Small flashlight is a good assistant, with it you can concentrate you view better. |
| stfjohn:
I did some tests, but it doesn't show much... |
| drhex:
What Mark is saying is take a pic of the board from both sides and overlay them so you can see the traces on both sides at once. Makes it easy to follow signals. You can do some jiggery pokery with photoshop or similar to reduce the images to the traces. |
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