Question about Electronics - Others
Disconnected power out from inverteected and connected it to mains. all affected appliances working. Would like to fix inverter.any suggestions?
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Posted on Jan 02, 2017
Posted on Feb 08, 2008
SOURCE: UPS problem
Based on your post/description, two (2) possibilities:
1. electronic fault - main power/AC mains sensor which could be really just a relay; or
2. corroded fuse terminals or fuse holder.
The first is a bit of a challenge since different brands/models have different sensing circuitry design. Some can be as earlier stated, a simple AC relay while others could be a TRIAC switch with a DIAC trigger. Still, some could be an elaborate AD converter and a myriad of logic circuitry. Often, a service manual or at least a schematic diagram would be needed, however these are not that readily available and most often the tech or DIYer must resort to winging it. This of course would require familiarity with electronic circuitry and components, use of a DVM and a soldering iron. Extreme caution must be exercised since even with 12VDC supply most of the electronics are at least at 60VAC+ level.
The 2nd possibility would be of course be the easiest to determine and repair. Replace/clean.
Should the downtime & repair cost makes the project no longer economically reasonable, perhaps your best bet would be to simply replace the UPS since their prices are relatively low.
Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information.
Good luck and kind regards.
Thank you for using FixYa.
Posted on Apr 16, 2008
There seems to be problem in your power supply. Look for any swollen capacitor --- generally 3300uf, 10V. Be careful about the polarity of the capacitor before you take it out. Check the capacitor to make sure how it's mounted ( for polarity purpose). Negative side of capacitor will be toward the outside of pc board. Substituting 2200uf, 16V capacitor for 3300uf, 10V will work ok.
Posted on May 17, 2009
Had a similar problem with the same inverter BUT to include a failing cooling fan.
Take it back and get your money back as soon as possible.
Replaced it with a pure sine inverter 1500 watt that is kicking **** 24 seven days a week on my solar / wind power system.
Hope this tip helps.
Posted on Jan 30, 2010
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