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Dc-ac inverter wp-91652 sf-148 operation manuel

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Posted on Jan 02, 2017

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SOURCE: AC to DC inverter

Absolutely not.

Posted on Sep 17, 2012

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How to test an LCD TV or monitor PSU and inverter


Hi.

Before proceeding I assume you have technical training along with the multimeter. A full testing must be done with power on, and for safety reason must not be done by an untrained user.

The tip contains only general indications. The reader is supposed to have the training to apply in practice the testing method below.

If there is no power at all, then the responsible is almost always the PSU.

When there is no power, test AC in to PSU. If there is no AC in (read volts, or read ohms on power cable), that means that the power cord must be replaced.

If there is AC in, then test the PSU section near to AC input. You always find a resistor or a fuse in there . Check if it has blown.
After that you test the rest of PSU component. If there is no power at all , and problem is not power cord, it is often possible to spot at a glance a leaky or bulged capacitor.

If there is power, but the monitor stays in standby, then te PSU is forced to low voltage only by controller board. This happens when a fault had been detected.

In this case testing the PSU becomes more complicate. The technician must locate the control lines from controller board. This control lines operate at lower PSU voltage (often +5V), and turn on higher voltages on PSU board.

The inverter may use for example a +20V line from PSU. The +20V line is turned on by the controller board, closing a +5V control line to PSU. When PSU is in standby mode, the technician testing the PSU must bridge the +5V line with the PSU low +5V circuit, and test if the +20V line to the inverter gets turned on.

As explained this kind of test must not be done by the unexperienced user, as the chance to waste the unit beyond repair is high, and there are also many safety concerns.

After testing the PSU, next part to test will be the inverter board.

The inverter is tested reading DC voltage in from controller board, and AC out to back light system.
The inverter is an high voltage board, remember, safety first when testing AC circuit.

If the inverter has no DC from controller, then test PSU, if PSU is OK, and inverter has still no DC in when PSU line to inverter is on, then replace controller board.
If the inverter has DC in, and no AC out, then replace the inverter.
If the inverter has DC in and AC out when higher DC voltage to inverter is turned on, then test at component level the main controller board, and if present test LCD controller.

Regards.

on Mar 03, 2010 | Televison & Video

1 Answer

Can these be battery operated? If so can this be done.


Yes, you go through a converter.Check the attached links,
"I hope this helped you out, if so let me know by pressing the helpful button. Check out some of my other posts if you need more tips and info."
DC AC Power Inverters 12 Volt DC to AC Inverter

12 Volt DC To 110 Volt AC Power Inverter for Auto RV and Boat compatible...

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Operating instructions thermadyne sa tig 200p ac/dc


Go to this site and you can download or print a manual for your welder copy and paste to google search engine and it has the manual on pdf. TRANSTIG 200 AC/DC Servic Manual - Victor Technologies

Oct 07, 2013 | ARC Thermadyne Inverter Stick/TIG Welder...

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I mistakenly connected energy source at the AC inverter output .Inverter is 5KVA cyberpower inverter.After correcting the connection, It cannot switch from DC to AC( fault signal is displayed on its...


John,

It's shorted out, either replace the part or buy a new one.

If you need UPS, Surge, or Power Related help don't hesitate to contact me!
Daniel • daniel@psihq.com • Power & Systems Innovations • 800.260.2259 • www.psihq.com

Sep 24, 2013 | Cybernet Systems CyberPower DC to AC...

1 Answer

DC to AC power cord Do they still make them if so under what name or product name?


"DC to AC" cords are not really a common item. They are called "Inverters". Typical inverters are 12VDC to 120VAC and are found in mobile applications to operate houshold current type (120VAC) devices. Inverters cost many times more than thier "AC to DC" or "AC to AC" sisters.

An "AC to DC" and "AC to AC" cord however, is a very common item. They are usually called simply "AC Adapters" and are sold in many electronics stores (Best Buy, Fry's, etc.) and electronic specialty stores (Radio Shack) and electrnics suppliers (MCM, etc.) Nearly all of them are designed to reduce the voltage in your home (120 VAC volts alternating current) to a different but usually lower voltage that is either AC or DC.

In order to select the proper AC adapter, you need to know:
(1) Input Voltage - this is the outlet voltage - often 120 volts in N. America, (2) Output voltage - this is the voltage the device needs and is often indicated near the jack, The adapted must match this voltage. (3) the device voltage type - this will be either AC or DC. The adapter must match the type as they are NOT interchangeable. (4) the size and type plug on the cord that will allow it to mate properly with the jack. There are many, many types and it should be tested for fit prior to plugging in and must match the device jack (5) the power requirements - this is usually shown as a number in Watts (w) and / or Amps (a). It is very important that the apdapter power rating is equal to or greater than the amount specified by the device. Failure to meet the requirements above can cause failure of the device, adapter or both.

I hope this helps and good luck!

Feb 08, 2013 | Uniden BC60XLT-1 Handheld Scanner

1 Answer

Can A cobra inverter be plugged in to 115AC for DC 12volt output


in a word no!,,,,it cannot and you may blow it up if you hook it up to the 115ac volt supply,,,in side it there is a switch mode power transistor,,that bumps up the 12 volts to 115 volts it only works the one way,,that is 12 volts dc in and 115 volts ac out,,,,

Feb 22, 2010 | Cobra 2500w Power Inverter

1 Answer

Yesterday I bought an STP-120 SIMA power inverter


you inverter was not fully charged because it requires a 110/220 v ac as specified in the manual; to charge it so it is impossible for the aircraft 15vdc to charge it

Jan 27, 2010 | APC DC to AC power inverter ( external ) -...

1 Answer

MAGELLAN ROADMATE 700 ON THE FRITZ.


I had the same problem with myRm 700, too. Solution : connect your unit into the AC power pack . Turn it on. Then reinsert an address into the unit while plugged into the 110 volt ac wall outlet power supply. You may need to repeat this operation a few times.
Also, used mine in my 18-wheeler using a ac to dc power inverter. It seemed to work everytime. Note make sure the ac to dc inverter you by has enough dc output to feed your Gps all the juice it needs. That ac to dc inverter can be used to run other ac powererd appliances, too.

Aug 30, 2007 | Magellan RoadMate 700 GPS Receiver

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