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They help SOME.
I see you have an "STR"-type SMPS chip. IC -911. Can't see the number--but i KINOW it is one.
Go to the negative side of that big cap you got 171 volts on...and take the positive lead...on IC -911. See if those 2 larger pins have that voltage on them. If they do...then check the smaller pins to the same ground. If all show zero or so..the IC is NOT running and is likely BAD. But before you replace it... BTW__get the # of IC-911 for me.
ALso check ALL diodes near that IC..ESPECIALLY any glass ones. And check that "optocouler"..that little black thing with 2 leads on each side. On the side near IC-911...check it with the probe on hot ground--that big cap. There should be a BIT of voltage on it--it is is working and IC-911 is good. There is a small transistor in front of the optocouple--check it also.
if you do NOT have the 171 volts or near it on IC-911..but you DO have it on that cap...it is likely SHORTED. Take your postiive lead and put the meter on OHMS..and check those 2 larger pins on IC-911...to hot GROUND. It should NOT show low ohms...it should show at lEAST 10K ohms or higher. if it shows an ohm or less or so...the IC is SHORTED. If do...then the two pink-looking resistors beside the sink ar elikelyt OPEN...because of the shorted IC.
You notice the "line" around the transformer and IC..it says "live" on one side and 'isolated" on the other. This means that EVERYTHING inside that "box" the line contins is "HOT" with respect to the AC line...and all OUTSIDE Of the line is COLD...with respect to the AC Line. This is why you have to emasuse stuff on the HOT side--with respect to the HOT ground--that big cap and ALL outside of the line to CHASSIS ground..COLD ground. You are mainly concerned with the HOT area right now--since your SMPS is NOT running at ALL. But it IS possible--a fault on the COLD side--is stopping oscillaton.
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