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| FNIRSI-1013D AS MUCH USE AS A CHOCOLATE FIREGUARD. |
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| pcprogrammer:
Hi George, about the colors, when you bought the scope was it already like this or did it show the yellow and cyan traces on a dark background? If so, this means some part of the system broke down causing this, but what broke down, that is of course the question. Cheers, Peter |
| Gannet:
Good morning, Peter, I don't think the colors I have are what they used to be! Additionally, although it appears to be working, the scope will often 'Switch off' and sometimes it will take one or two cycles of the on/off button for it to re-awake. Hmm, maybe I do have an onboard fault after all. Regards George |
| pcprogrammer:
Hi George, with the problems recurring it indeed points to some defect. I have searched on goolge for inverse colors on LCD, but it did not give much to go on. I have no idea if a power supply issue can cause a display to do what yours shows. Can you measure the voltages with a multi meter? Especially the -6.3V, 15.8V and the 10.3V. It will be a process of exclusion to determine the root of the problem. |
| Gannet:
Hi Peter, here's what I get with the voltage check. 16.12v 10.62v -7.16v I attached another screen shot, Did you notice that the upper part of my grid/graticule is missing Cheers George |
| pcprogrammer:
Hi George, these voltages are within range of what is maximally allowed going by the datasheet I found for a similar panel. Did not notice that the grid was missing in the upper half. Start to think that the display is the problem here. I wonder if you see a large current drop when you boot the scope without the display connected. I bought this display and tested it with my scope. https://nl.aliexpress.com/item/32693491775.html I expect yours to be compatible with it. Maybe worth a try. Don't know how the older model is constructed, but replacing it in the newer model is a bit tricky since they used double sided tape to attach it to the touch panel. :palm: Someone used special wire to cut it loose in his scope. It is mentioned somewhere in the FNIRSI-1013D thread. Regards, Peter |
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