The switch has served me for 10+ years (was new when I bought it). It's a nice switch with connections on the back which makes for quite a clean desk. Reason for taking it apart was that the cooling fan was noisy so I expected it to be dirty/dusty inside and the need to order a new fan. What I found was that it was very dirty/dusty and some electrolytic capacitors which needs attention. There are 3 capacitors which needs to be replaced but the ESR on some of the other ones might be bad as well so I think I'll replace them all. Original...
I am repairing a Dell-5520. I haven't removed the MOBO yet, but was wondering if they are typically double sided with surface munt components on each side? I found the GR Board View File, and using FlexBV5, haven't figured out how to display the bottom side (assuming there is one).
For those in 220V locales, anyone power their SMPS with DC, and how high of a voltage is okay?
What kind of PSU?
I suspect that 240V * sqrt(2) = 340V DC is probably fine because that would be about how much the the primary rectifier ends up with peak voltage. Just wondering, other than input capacitor voltages, can one go up above this 340V without damage? Will that input capacitor be the upper bound?
Wondering if exactly that, can I feed near 400VDC into bona fide specced at 220V SMPS without damage?
Currently have a 120/220V switchable SMPS I want to see if I...
Hey guys, not sure if this is the right forum, but does anyone have a reliable source for BGA chips such as PCH, south bridge, etc? Tried different sellers on Aliexpress but its more of a "1 out of 3 faulty chip" experience with them.
I remember reading a thread on this topic here but I can't seem to find it anymore.
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