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Odd Residues...

Geoffrey Hourihan

Morning All,

Does anyone have an opinion on what the red residue may be and what effect if any it would have on the board?

Geoff

  • 0

    Ha! those potted transformers/ chokes have been running hot or the potting compound did not have enough hardener. It is non toxic and can be scraped off and put in the bin with other plastics, but probably safer to leave it unless it is getting into connectors or switches, but it is not an encouraging sign - it should be inside  the grey boxes with the inductors it is supposed to protect..
    Mike.

  • 0 in reply to mapj1

    Thanks for that. One of our engineers noted it a while back and said it was nothing to worry about and we were a bit dubious......

  • 0

    There is another possibility that if it is leaking not from within the boxes, then I suppose it just  may be that it was added as a splat of anti-vibration 'glue' (or perhaps 'goo' would be a better name) between the transformers and the board, to stiffen things up for transport or even to assist during assembly, by taking the transformer weight off the solder joints between transformer pins and PCB, but not to do that while on the level and not even to wipe up afterwards  would be quite  unprofessional, so I suspect post installation leakage.

    M.

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