Yellow discoloration Artifacts on ABS render

[Anonymous]

See design view and the rendered view below.

 - I have changed lighting, and material from ABS to Powder coat etc.

 - Set Render times from quick to super etc

 - I cannot seem to get the odd yellow blobs to go away. Ideas?

 - Thanks for your help. let me know what other details you may need.

 - Really appreciate any clues.

[Anonymous]

 

 

[jeff_strater]

I am in no way a rendering expert, but it looks as if this may be reflections from the environment.  Try choosing a different Environment in the Render Setup dialog:

or, changing the brightness setting in the main settings tab:

Just a guess, though.  If you share the model, others can take a look.  Thanks.