Dapol 4mm Class 22 - lighting failed completely - DC version

[97xx]

I have the above on DC and although it runs fine, all the lighting has failed completely.

 

Am I correct that this is a known issue, and may be solved by a 'new version' blanking plug/board?

 

My blanking board as no switches on it - the 'new version' does - and so what do they do as my instruction sheet does not reference them?

 

Thanks.

[97xx]

UPDATE: yes, it was a failed blanking plug.

 

Replaced with the 'new version' - marked 'Class 52' but sold as for 22 and 52. A vastly simpler board which seems only to sense polarity and switch some stuff on and off.

 

Both shown below - 'new version' (grey background) picture taken from DCC Supplies website, 

Product Code: 115600 in case you are looking.

 

You'll note the new version has two switches on it. I tried them briefly and unless they control the cab lights (Which I didn't have connected at that moment), it's not clear what they do. Both left in the ON position at least had all DC lighting functionality working as with old plug.

 

Curious as to why the original has three legs of the op-amp IC cut through.

Edited February 10, 2021 by 97xx