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power supply connector replacement on Dell Inspiron 1545 powersupply?
Can anyone tell me what size or type of power connector is on the end of
the power supply for the Dell 1545? Mine has become intermittent and I can actually see some of the copper shielding making its way outside the insulation. I don't need the entire power supply replaced-- I'd just like to cut off and replace the end connector if I can get the specs. Thanks in advance. |
#2
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power supply connector replacement on Dell Inspiron 1545 powersupply?
R2D4 wrote:
Can anyone tell me what size or type of power connector is on the end of the power supply for the Dell 1545? Mine has become intermittent and I can actually see some of the copper shielding making its way outside the insulation. I don't need the entire power supply replaced-- I'd just like to cut off and replace the end connector if I can get the specs. Thanks in advance. http://www.formfactors.org/developer...public_br2.pdf Connector: MOLEX* housing: 24 Pin Molex Mini-Fit Jr. PN# 39-01-2240 or equivalent Contact: Molex 44476-1112 (HCS) or equivalent [ Mating motherboard connector is Molex 44206-0007 or equivalent) ] If you scroll down here, you can see "Associated Products". http://canada.newark.com/molex/39-01...anada%2Fsearch Unfortunately, some of those are male pins and some are female. One part would be a motherboard-side solution, the other a cable-side solution. There are solder-tail and crimp. For example, when making ATX 24 pin extension cables, those are crimp style on either end. The motherboard application is solder-tail. If you check out the individual pages, a PDF datasheet should be available, but it isn't as good as the whole 20-30 page Mini-Fit Jr. section of a catalog. I have a sample here in my load-box parts of some pins, but it's the wrong one for what you want to do. Mine has to plug into the power supply end, which makes it a "motherboard-side" connector. Both the male and female have square pins, only one is smaller than the other, in square dimension. The package I got, was a package of 15 pins. You would need two packages to re-do a 24 pin application. You also need a means to do crimping. In my application, I mangled them with pliers and some solder, which is *not* how you do it. I built a load box, to put a defined load on an ATX supply, so technique does not matter. My load box is a "light load", 100W or less kinda thing. It's not a stress test, merely a means to put a light stable load on the PSU for a couple hours, while I probe with a voltmeter for "surprises". When you re-terminate them, be careful of wire length. You would be surprised how much of a difference it makes, if you make one wire too short. They behave badly if you cannot trim them to the right length when assembling. You can buy male to female extension cables for ATX. Snipping one end off, does give a cable. But then you need to solder the end of the cable, inside the PSU. And I definitely do not recommend that. You might need a 200W iron, half an inch in diameter, to get enough heat to work on the "blob" inside the PSU. So crimping on new pins, and sliding them back into the existing shell, is the right way to do it. (The pins have "ears" that grip the shell, so the wire cannot back out.) A crimping tool would do a nice job (one crimp grips the bare copper, the other larger diameter crimpt grabs the insulation to maintain wire security). Doing it with pliers, you better have spares, and not get upset easily :-) Yeah, it's a project... Paul |
#3
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power supply connector replacement on Dell Inspiron 1545 powersupply?
On 5/12/2017 11:12 AM, R2D4 wrote:
Can anyone tell me what size or type of power connector is on the end of the power supply for the Dell 1545? Mine has become intermittent and I can actually see some of the copper shielding making its way outside the insulation. I don't need the entire power supply replaced-- I'd just like to cut off and replace the end connector if I can get the specs. Thanks in advance. Dell 1545 power supply connector size If it's Round, Tip Diameter ~ 0.20 x 0.29 - 0.31 inch / 5 x 7.4 - 7.9mm (I.D. x O.D.) If it's Octogonal, Connector Size ~ 7.4x5.1/12mm (Octogonal Barrel, w/ Center Pin) |
#4
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power supply connector replacement on Dell Inspiron 1545 powersupply?
On 5/12/2017 12:12 PM, R2D4 wrote:
Can anyone tell me what size or type of power connector is on the end of the power supply for the Dell 1545? Mine has become intermittent and I can actually see some of the copper shielding making its way outside the insulation. I don't need the entire power supply replaced-- I'd just like to cut off and replace the end connector if I can get the specs. Thanks in advance. Copper shielding? Huh? If there is any shielding there it is different from every PC power supply I've seen. Far more likely that the little latching ears on a pin (or pins) aren't holding fast in the plastic housing and are working its (or their) way out. Take a close look at how the connector is put together and try pushing the problematic one(s) back into place (after disconnecting it from the MB, of course). While you are at it, look carefully for any burned or corroded spots on the contact surfaces since a bad connection is capable of making itself even worse over time. I expect that you don't have access to the proper pin removal tool or I'd suggest that you use it to remove, check, and re-insert as needed. A piece of brass hobby tubing will do the job of removing pins if you can find one the right size. |
#5
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power supply connector replacement on Dell Inspiron 1545 powersupply?
R2D4 wrote:
Can anyone tell me what size or type of power connector is on the end of the power supply for the Dell 1545? Mine has become intermittent and I can actually see some of the copper shielding making its way outside the insulation. I don't need the entire power supply replaced-- I'd just like to cut off and replace the end connector if I can get the specs. Thanks in advance. So it's a laptop then ? *Inspiron* 1545 ? The replacement adapter here, looks hexagonal for some reason. There are "pseudo-standard" round barrel two-conductor connectors on a lot of devices. Someone didn't want that one to rotate. https://www.amazon.ca/dp/B005FH3X1Q?psc=1 If that's the connector on your 19V 3.x amp adapter, you won't get a replacement at RadioShack. They tend to have the round barrel type, in 15 different sizes. They make replacement (round) barrel connectors with screw or soldertail termination, inside a housing that unscrews. The real MCCoy would likely be molded. The closest you could get to molded, is to buy a barrel extension cord, cut off one end, and fashion splices on tne wire end. That would require soldering and Polyolefin heatshrink tubing, to provide insulation. I no longer use electrical tape for that sort of thing (it comes off too easy). You can put one heatshrink around each conductor (to cover your new solder joint), then a second, larger heatshrink around the whole wound area, to cover it. The stress relief isn't perfect (the wounded part is too stiff) but you do get to use the adapter for a few more years. ******* When the connector inside a laptop fails, some have a user replaceable PCB subassembly that allows easy repair. In the "old way", the connector is soldered to the motherboard (the flat board with all the components on it). Repair then requires good soldering skills (to fasten the connector frame to the PCB and provide a strong anchor). If the motherboard is cracked, you really don't have a lot of good options (as an attempted repair will likely just crack again). The beauty of the replaceable assembly, is it protects the more expensive motherboard from damage. However, you still have to track down the spare part, which may not be as easy as it sounds. When they do stupid stuff like that, they should really throw a spare one of those, in the packing crate. Paul |
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