Repairing the 5V output from a Mastech HY3005D-3 (cheap import) power supply--- make money online

I went to program some microcontrollers

today and found out that the five volt

output of my power supply was dead at

first I thought you know there's

probably just a circuit breaker a fuse

or something in there but it turns out

there's actually a problem so the five

volt regulator board is here and if

we're monitoring the output right now

which is we're not getting anything but

if I tweak the board there's the five

volt

regulated output and if I let the board

go we're back down to zero so there's

obviously a part that became a solder

joint that broke or a trace that broke

or something on there so let's take a

closer look so this is all low-voltage

here so I don't have to really worry too

much about touching it the input is here

this is coming from the transformer this

is an input of about nine volts AC or

something there's the bridge rectifier

and the output is here going this way

there's one other component the actual

linear regulator which is tied to a

heatsink on the back and it's off this

board so it's using some kind of a it's

got an IC on here to control the linear

the regulator so I'm not exactly sure

what's wrong right now I'm suspecting

that the solder joints between the large

leads on that bridge rectifier and the

board you know cracked there's probably

a really slight breakage between the the

lead and the PCB so I'm going to do is

get my soldering gun out and just reflow

the solder between the bridge and the

board let's see if that fixes it and

what do you know it looks like my first

guess was correct so all I did was just

reflow the solder on this side of the

board where those large leads go through

and I've been tweaking this thing around

and I don't see any fluctuations at all

in the voltage output so they're

mounting method actually looked pretty

good there's a threaded stand off this

brass stand off in here and there's a

screw that comes in from through the

bottom of the case into that stand off

so it pulls the the rectifier down to

the down to the metal of the case and

then there's another screw from the top

on the other corner of the board so I

don't know if

you guys have any opinions about that

mounting method but it sure looks like

what happened is is just through the

minimal flexing that this thing is going

to encounter that the leads here are

rigid enough are they actually basically

pulled out from the from the PC board

the solder joint was under too much

stress

anyway if you happen to have the same

model power supply you may want to keep

that in mind especially if you've been

having trouble with the 5 volt output ok

hope that was helpful see you next time

byeTop Paid Keyword :  earn cash online, google make money from home, earn money online without investment by clicking ads, free earn money website, online money making jobs, earn money online without investment by typing, online work for money, best online earning sites, make money online with google, online earning websites, money making websites, online earning websites for students, invest online and earn money, best online money making, online money income, view ads and earn money without investment, earn money online by clicking, online money income site, money earning sites, online earning sites, best website to earn money, free money earning sites, money earning websites, get money online, online earning tips, online earning without investment, earn money online without investment for students, earn money by clicking ads, earn money online without investment, online earn money website,