Question about Denon DN-S3000 Turntable

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Does not turn on - could be power supply problem - external cable and fuse okay - how do I open case to look inside?? (qualified electrician and stage systems specialist)

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Screws on side come off and you must remove the 4 screws on the front and remove the CD drive. I think there are a couple on the back. pretty easy to get lid off.

Posted on Sep 10, 2009

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Posted on Jan 02, 2017

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What is the difference between a external hard


External hard drives contain a power supply to operate a standard hard drive in a case. It usually connects to a USB port. Usb drives get their power from the wire that connects it to the USB port A regular internal hard drive gets it's power from the computer's power supply wiring. The data cable is either a flat ribbon cable or a 6 pin cable that connects directly to the mother board.

Oct 15, 2014 | Computers & Internet

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Computer will not turrn on hp a 1230n


Hi Raul,
Try this following instruction to isolate the problem.
1. Check the power outlet/AVR if it has an output, if okay,
2. Check the wire if okay, often times, the wire is damage or open. try to use another cable.
3. If the wire is okay, try to isolate the power supply, remove the power supply connection to the board and short the color gray and green wire to see if the power supply is working, if the power supply turned on then its ok.
4. It the power supply is working, try to check the power on button, it might have a problem. to override the power on button you can short the pins inside the board where the wire from power button is connected to motherboard.

Jun 27, 2011 | HP Pavilion a1230n (EG134AA) PC Desktop

1 Answer

The power won't turn on, how can i fix that?


The possible causes for this unusual behavior may be if 1) electrical power cord may not be plugged in or connection or may be loose. To make sure this is not the problem see that the plug fits tightly in wall outlet.
2) House fuse is blown, circuit breaker tripped, or a power outage has occurred. Reset circuit breaker or replace fuse. Do not increase fuse capacity. If problem is a circuit overload, have it corrected by a qualified electrician.
3)Water supply tap is not turned on. Turn on water supply tap.
If all the above methods doesn't work, please call at 1-877-714-7486 to locate your nearest LG service center.

Feb 05, 2011 | LG WM-2277HW Front Load Washer

1 Answer

I have a creda europa solar plus double oven and want to replace it with a BOSCH HBM56B550B will the power supply I have be enough for the Bosch?


What you must do is calculate the total power required by the Bosch cooker. Convert it into Amperes and copper cable is roughly 10 Amperes per 1.50mm cable. What size cable feeds you cooker at present? Or
Is the maximum power calculated for the old cooker the same or more than the new cooker. If it is and the old cooker was installed by a qualified electrician observing local electricity codes, no problem get it fitted, if not consult a qualified electrician.

Jan 01, 2011 | Microwave Ovens

2 Answers

TV quit working


I just fixed a friend's set that had the same symptoms.
Multimeter check: all the expensive parts are still good!
Physical check: Hmmm this pair of 10V 1000uF caps are bulging on their tops. ( they are located by the output connectors ).
I swapped out the two bad caps. and Bingo!
Jeffrey

Mar 12, 2010 | Samsung LN40A500 LCD TV

2 Answers

I moved my home office desk a few days ago. I properly powered down my computer and unplugged everything. When I reconnected everything, the computer won't power up.


1 - Make sure you have power to the outlet you plugged the computer into. 2 - Make sure all of the cables plugged into the back of the computer are firmly seated / attached.
3 - Check that the switch on the back of the computer (usually quite near the power cord) is turned on.

Jan 06, 2010 | Dell Computers & Internet

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My Kogi L7EH-TA monitor will not function when hooked to my new Dell Inspiron 537.


Do you get a No Signal on the monitor?

IF so, the problem is in your computer, or you have a bad monitor cable. (Cable from monitor to computer)

Try the monitor on a known working computer, and use that working computer's monitor cable.

Monitor works?

Okay now use the monitor cable from the Dell Inspiron 537.
Monitor works?

Problem is in the computer.

Monitor doesn't work?
Problem is the monitor cable. They do go bad.

Problem is the computer? Check to see how dirty the computer is inside. Unplug the computer from power, open the computer case.

DO NOT reach inside, and touch any components, even to clean, until you have touched the metal frame of the computer case. You are just looking for now.

[ Your body carries Static electricity. Static will fry out the hardware components inside a computer.

Static will do it in a flash, and you won't see it, or feel it!
Computer unplugged from power, you're safe. Touch the metal frame of the open computer case, your computer is safe ]

If the inside of the computer is dirty, so is the power supply. The case fan/s draw air into the computer, and push the air through the computer case.

The power supply fan draws air through the computer, and pushes the air out of the back of the
computer.
Anything that goes through the computer, also goes through the power supply.

Dust, Dirt,. Hair, Lint, Carpet Deodorizer, you name it, can be drawn in. (Sometimes, spiders make webs inside!)

Inside the Dell Inspiron 537 Desktop PC, is a processor with a Heatsink on it, and a Fan on top of the heatsink.

The Heatsink is a square looking device, that has fins on the top.
The bottom is flat, and is attached to the top of the Processor's case.
The heatsink absorbs the heat of the processor, by being in close relation to it, and the fins radiate the heat up, and out.

(What an average Heatsink, and Fan combo look like,

http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=2943299&CatId=493

There is also Thermal Paste, in-between the top of the Processor case, and bottom of the Heatsink)

The fan attached to the top of the Heatsink b-lows the heat away.
If the fins become clogged, and the blades of the fan, the processor heats up.

When the processor becomes too hot, it turns off.
This is a Fail Safe feature that is built-in. BIOS turns the Processor off.

During this, the Processor has been calling for more power, due to the heat.
The power supply tries to keep up.

The power supply has Heatsinks inside it, also. Plus a fan, to draw air across the components inside the power supply.
This is the power supply's cooling system.

Once the fins of the heatsinks become clogged, and the fan blades, the cooling efficiency drops tremendously.

The power supply heats up.
Again, Heat = Wasted Energy.

The power supply tries to put more, and more power out, until eventually the components inside the power supply fail.

Power supply failure is a main cause of computer failure.

Dell Inspiron 537MT Desktop PC Service Manual,

http://support.dell.com/support/edocs/systems/insp535mt/en/sm/index.htm

Dell Inspiron 537ST Desktop PC Service Manual,

http://support.dell.com/support/edocs/systems/insp535st/en/sm/index.htm

Jan 03, 2010 | Kogi l7eh-ta ko 17" Flat Panel LCD Monitor

1 Answer

No power at all, i open it up, troubleshoot, nothing happens


Check the power supply outlet and pc power adapter for correct voltages with a multimeter. The power cable to which the adapter is attached should also be confirmed either by continuity or voltage test. If all pass, then the notebook power supply unit should be check for some broken fuse. If the fuse is found to be alright, please contact qualified technician to fix or replace as the case may be. Good luck

May 04, 2009 | HP Pavilion dv4000 Notebook

1 Answer

Short Cicuit on my Buffalo external hard disk...Help!!!!!!!!!


First of all Hi!

This Fixya will help you solve this problem. First of all your hard drive should be still ok but you will require to open the hard drive enclosure and replace the power supply (due to the wrong voltage tapping). Please feel free to follow these fixya's not only to recover your photos but get back a working hard drive!

Solution 1: Check fuses
1. Disconnect faulty enclosure from any mains supply
2. If power supply is INTERNAL you will have to OPEN the enclosure but BEFORE you do that WITH THE hard drive UNPLUGGED TURN ON the power switch to discharge the hard drive's internal power supply
2. Open the enclosure and check for any fuses on the inside. There should be one located close to the power swtich from inside. Change it with one of a similar rating because most probably this is the culprit.
3. Try and power up the drive THIS TIME WITH the CORRECT voltage tapping
4. If the power supply is EXTERNAL you do not need to open the enclosure, just change the power supply with a similar one and you should be up and running again.

Solution 2: But the fuse is ok but there is bbq smell when i opened the enclosure!
1. Ok this means that you will need to get hold of the internal hard drive.
2. If you have another computer check if the hard drive is still ok! Here is how:
- Turn off the computer
- Open case , #
- Hook it up to the Internal IDE cable and the internal power connector
- Turn on the computer.
- You should have this detected in my computer as a new hard drive and you
should be able to see all the data in it
2. But probably you still want this as external dont you? Ok buy another enclosure from a computer shop (this time you will just need an empty one)
3. Plug the hard drive in new enclosure. If you're not experienced enough just give it to them to hoook it up for you and FINALLY you should have the reincarnated buffalo hard drive functional again.

Hope this fixya was of help :)

Best Regards
ALx

- Please take some time to rate this solution, really appreiciated thanks :) -

Jan 07, 2009 | Computers & Internet

1 Answer

My DMR-EH80VEB IS COMPLETELY DEAD ,HAVE CHANGED EXTERNAL FUSE BUT STILL NO GOOD.


Hi, I have the same model PVR which stopped working in the same way, in answer to your question, yes there is an internal safety fuse located inside the case under the switch mode power supply cover, WARNING this cover protects against electrical shock, Ie there are full mains supply voltages under the cover so make sure that the power cable is completely disconnected before you remove the safety cover. if the fuse has blown make sure that you replace it with a quick blow compatible type.
Thi did not help in my case because a component had failed in the power supply board so I am still looking for a service manual, anyone know where I can buy one.
David Trueman

Oct 25, 2008 | Televison & Video

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