The site is written in Japanese. It states the FOR/CHR error is caused by loose connection between a circuit board at the bottom of a body and a flexible cable that is connected to the CF card connector. 3rd, 4th, 5th, and bottom pictures from top show how the flexible cable is bowing upward immediately next to the connector and is giving undue pressure that makes bad contact (but it is hard to tell in my eyes). The web page is also showing how to open the bottom case indicating which screws to be loosened. Be careful length of screws are different, so note which ones fit where. The picture 2nd from the bottom is the one after repair. The connector is marked and you may notice the flexible cable stays flat and does not bow upward.<br>
I did opened my D70 and taped a small roll of a paper towel on the flexible cable as it presses cable down held by a bottom cover. So far it is working fine. But I am not sure about long term efficacy, because I did it just today. This is a low cost and low risk solution and I think it is worth trying.</p>
Nikon D70 CHR error message
in Nikon
Posted
<p>I have same problem on my D70 which is more than 5 years old. I found a seemingly do-it-yourself solution in an internet.<br>
http://blogs.dion.ne.jp/nisegrapher/archives/6877743.html<br>
The site is written in Japanese. It states the FOR/CHR error is caused by loose connection between a circuit board at the bottom of a body and a flexible cable that is connected to the CF card connector. 3rd, 4th, 5th, and bottom pictures from top show how the flexible cable is bowing upward immediately next to the connector and is giving undue pressure that makes bad contact (but it is hard to tell in my eyes). The web page is also showing how to open the bottom case indicating which screws to be loosened. Be careful length of screws are different, so note which ones fit where. The picture 2nd from the bottom is the one after repair. The connector is marked and you may notice the flexible cable stays flat and does not bow upward.<br>
I did opened my D70 and taped a small roll of a paper towel on the flexible cable as it presses cable down held by a bottom cover. So far it is working fine. But I am not sure about long term efficacy, because I did it just today. This is a low cost and low risk solution and I think it is worth trying.</p>