Question about HP Pavilion a1620n (882780664494) PC Desktop
Larry_moo748 I'll tell you how to see if it's the Power Supply, or the Power On switch that is the problem.
(The Power On switch is located inside the plastic Power On button)
I would also like you to reconsider taking it to a computer repair shop, IF the problem is a bad Power Supply, and replacing the Power Supply yourself.
It isn't that hard, and it will save you money.
The test to diagnose whether the problem is the Power Supply, or Power On switch, involves bypassing the Power On switch.
A jumper wire is made from a paper clip straightened out, then bent into a U-shape. The middle of the U-shape is wrapped with a few turns of plastic electrical tape.
This is where you hold the jumper wire.
The voltage involved here Larry is 5 Volts DC.
Two D cell flashlight batteries produce 3 Volts DC.
However there may be a small spark.
Just want you to know what is involved.
Also,...your Power Supply is a voltage converter. It converts 120 Volts AC, (USA), or 220 Volts AC (Europe), to three main DC voltages.
1) 3.3 Volts
2) 5 Volts
3) 12 Volts
I would like you to look at your Pavilion a1620n motherboard on HP Support,
Looking at the motherboard photo at the top, observe the Ram Memory slots.
The long Blue, and Black slots to the right, with the White lock tabs on each end.
To the right of ram memory slot 4, (Black slot all the way to the right), is the 24-pin ATX main power cable connector, on the motherboard.
It is a White vertical connector (In this photo orientation), and has 24 socket holes.
Two columns of 12.
This is where the 24-pin ATX main power cable from the Power Supply plugs in.
Let's look at a closer view of a typical 24-pin ATX main power cable,
Observe the photo to the far Right. This shows a 24-pin ATX main power cable plugged into the motherboard.
Observe the Green wire, and look at the Black wires.
The Green wire is the Soft Power On wire. (Also abbreviated as PS_ON)
This is a 5 Volt DC wire.
Observe the Black wires.
ALL Black wires are Ground wires.
The jumper wire goes down into the socket hole with the Green wire, RIGHT NEXT to the Green wire.
At the end of the Green wire is a metal terminal. The jumper wire must go down into the socket hole far enough to Touch the metal terminal. (Approximately 1/2 inch)
The other end of the jumper wire goes down into a socket hole with ANY Black wire.
The jumper wire is a U-shape. Both ends of the jumper wire go down into the above named socket holes, at the same time.
The connection made is no more than 2 seconds.
Power Supply comes on? You have a bad Power On switch.
Power Supply does Not come on? You have a bad Power Supply.
(Should have added before, that the Power Supply is plugged into power for this test)
Disconnect all cables to the computer tower, except for the power cord. Open the computer case. Lay the computer on it's side, open side up, on a table. You can lay the computer on a towel to keep from scratching the table, and the computer case.
(Doesn't hurt the computer to run laying on it's side. You can run a computer upside down if you wish. Kinda' hard to put a disk in the optical drive, though! lol)
After you have achieved this test, and if you have found the Power Supply to be bad, post in a Comment if you wish step by step instructions (And a video, or two), of how to replace the Power Supply.
I will also recommend a few Power Supply choices if you wish.
[ It's an ATX power supply.
Generic unit probably made by Bestec, HiPro, or Delta ]
Posted on Oct 10, 2010
Hi it's look like you're right. Can you hear fan from power supply if not it's power supply for sure and it's not neccery costly. You can also check all conection on motherboards. Just get power supply with the same Watts and do it your self. If you need more help let me know. Regards if it help please rate it
Posted on Oct 10, 2010
a 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of.(from cars to computers, handyman, and even drones)
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
Tips for a great answer:
Jan 03, 2013 | HP Pavilion 761n PC Desktop
May 14, 2011 | HP Pavilion a622n (PC108A) PC Desktop
May 07, 2011 | HP Pavilion a767c (82916052406) PC Desktop
May 06, 2017 | HP Pavilion a1630n PC Desktop
Oct 06, 2010 | HP Pavilion a622n (PC108A) PC Desktop
Sep 26, 2010 | HP Pavilion a656x PC Desktop
Feb 28, 2010 | HP Pavilion a1610n PC Desktop
Nov 29, 2009 | HP Pavilion a1140n (PX774AA) PC Desktop
Mar 16, 2009 | HP Pavilion a450n PC Desktop
Aug 30, 2011 | HP Pavilion a1620n (882780664494) PC...
444 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: