The supplied PSU is unregulated, so any spike will be mains side and not induced by the PSU itself. Apart from a small cap to smooth out the DC from the bridge the EMI will be exactly the same no matter which PSU is used.
Although I do not recommend using any PSU apart from the VM one and due to the fact that a replacement isn't chargable and easily available I just wondered given your original statement as an ex-component level repair tech whether a varying voltage would effect the cable transmissions
---------- Post added at 15:02 ---------- Previous post was at 15:02 ----------
Quote:
Originally Posted by pabscars
A man after my own inquisitive heart 
"If it aint broke" "pull it apart and modify it"  |
???? Whoever do you mean...can't be me...
---------- Post added at 15:07 ---------- Previous post was at 15:02 ----------
PS...the 255 I pulled apart (now back together) isn't the modem I'm running on
