Question about IBM 32P1020 APC 2U SMART UPS 1400VA RMB (731304015819) UPS System

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Repaired ups I have repaired master guard ups A1000 out put is ok ,, ups is use for control supply of rectifier of ac drives i want to know weather theres adtional feature or not ( sinosudioul problem can i conect it again to the system

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I have a TCL 21inch CRT TV. When it plug to AC some noise come form the SMPS transformer (chopper) did not TV work. Please can you guess the problem.


Sounds like SMPS transformer is faulty. If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/

Dec 04, 2014 | Televison & Video

2 Answers

NO POWER AT ALL


Hi
our tv set need to be serviced. Here are some tips:
1. Open main fuse. The fuse is clean but interrupted. You can try replacing it with one o the same value.
2. Fuse Blown or blackened. Short in the rectifier bridge or in the switching transistor. Out of the power supply: supply line rectifier (100/150V) shorted.

Sully

Sep 29, 2013 | Televison & Video

1 Answer

My Bose radio stopped working, no sound no lights AWRCC1


Hello
Check its power cord first. If it is OK, check its power supply section inside. There will be a fuse at the power supply rectifer board. Check it. If it is found opened [damaged] never put an other fuse, without proper check to the power supply and main audio amplifier section. There must be some reason for the blow up of this fuse. Without rectifying the fault, replacing an other fuse, may make more components to get damaged, and the repair work may cost more. OK.

Feb 26, 2012 | Bose Wave radio/CD remote control -...

4 Answers

I want to change the key guard code of my nokia1616. how? i don't want it to be just 12345


How do I change the code that locks my phone?

Press "Menu"
Scroll to Settings, press "Select"
Scroll to Security settings, press "Select"
Scroll to Change access codes, press "Select"
Scroll to Change security code, press "Select"
Enter the current security code, press "OK"
Enter a new security code, press "OK"
Re-enter the new security code, press "OK".

Nov 07, 2010 | Nokia 1616 Cell Phone

2 Answers

Jumper settings


If you try to enter in safe mode or at last known config and the laptop reboots or freezes then you need to reinstall the operating system if you want to use that hard drive on hp pavilion a1000n. The laptops have different chipset and XP requires to be the same or similar chipset to boot properly.

Oct 06, 2009 | Maxtor Hard Drive

2 Answers

JVM239WV001 Stopped working.


It could be a flame sensor, which is a thermal switch located inside the cabinet on top of the cavity (there may be two of them). One power lead should go to the fuse, the other would go to the flame sensor. Remove the flame sensor and check for continuity. If it shows open (infinite resistance), put it in the coldest part of your freezer for a few minutes, then retest. If it now reads continuity (zero resistance), replace it, put the appliance back together, and see if it works.

Jan 21, 2009 | GE Spacemaker JVM1640SJ Microwave Oven

3 Answers

Tv does not turn on


When you are technically Qualified only then you shoul solve this problem. because this problem may be because of power supply. Ok you must check power output on diode rectifier if it is ok then check the mains chord,which is directely connected to AC supply. And Then check the VC i.e. Volume Controle wire. your TV Set may be on Good Day Friend. And BE councious when you work with AC /DC Power supply or after opening the TV Set.

Jun 10, 2008 | Televison & Video

1 Answer

Won't work on ac


1. Make sure the AC power source is ok.
2. Make sure the AC power cord is good with no damage.
3. Look to see if there is a reset button on the rear of the set. If not, then look for a blown AC fuse inside the set.

Since the set works fine on +12VDC, the majority of the TV set is ok. You have a problem in the AC power supply. It could be a blown fuse, bad rectifier / regulator, bad step-down transformer.

The TV typically runs from +12VDC. The AC supply steps-down the 120VAC and rectifies it into +12VDC to power the TV. At some point in the TV, there is junction point where the +12VDC from the sets internal AC supply meets the external +12VDC power source. Usually they are electrically isolated from each other with a switch or with diodes.

Please let me know if I can be of further assistance to you.

Good luck!

- Jim

Mar 04, 2008 | RCA E13335GY TV

1 Answer

Milwaukee Job site radio


Questions:
1. Does the AC cord look ok? Not damaged?
2. Have you tried another AC outlet?
3. Does the AC cord unplug from the radio?

When you operate the radio from the AC power cord, the radio uses an internal power supply consisting of a step-down transformer, rectifier, and filter that converts the AC to DC to operate the radio.

When you run the radio off of batteries, it powers the radio directly. In some radios, when you plug the AC cord into the radio, it activates a switch that disconnects the battery voltage to the radio so that the batteries wont be damaged from the voltage created by the internal supply.

The radio can be powered by either the batteries or the internal supply. You don't want either supply affecting the other, so that is why a switch is sometimes used.

Since the radio works fine off of batteries, that would indicate that there is a problem with the internal power supply. This could be a blown fuse, bad transformer or bad rectifier diode.

Good Luck,
- Jim

Jan 24, 2008 | GE Superadio III AM/FM

1 Answer

When i turn my sony nw A1000 it starts up then gets stuck with a cd spinning on the screen until the battery runs the only way to switch it off is by pressing the reset button


your hard drive is dead, you are going to need to buy a new one, you can buy micro drives off ebay of about £30 of you could take it to a sony repair center but that is going to cost.

Jan 24, 2007 | Sony NW-A1000 MP3 Player

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