Hi. Just need if possible for anyone to find this resistor PR801 where to get it from ? Thank you
Attached Files
-
Last edited by Gimi; 06-03-2017, 02:09 PM. -
Re: Help finding a resistor
everything you need is there.
1206 is a package style,
0.01ohms - very low that, it wont come cheap.
1% tolerance
D - ??? dont know that reference.
what is it on? i may be able to get one from a scrap pcb -
Re: Help finding a resistor
Hi. Thanks for the replay .it's from a dell e6230 motherboardComment
-
Re: Help finding a resistor
Hi. Would this eBay part number be correct:112368746577? Thank youComment
-
Re: Help finding a resistor
maybe, i would try RS first.
but before you do, what is wrong with the old one?
these things dont fail - they are only killed by something else!Comment
-
Re: Help finding a resistor
Got this from a friend to try repair. Is making a short , when battery and power supply both attached then power supply dies. Tested a few things and this shows the problem (hopping this is the one anyway lol). Thanks and will try rs.Comment
-
Re: Help finding a resistor
0.01ohms is supposed to look like a short!Comment
-
Re: Help finding a resistor
That's a current sense resistor... it has 4 terminals because two terminals are supposed to connect to the big traces carrying current and the 2 thinner traces are going to an opamp or something that would measure the voltage drop across the resistor.
Here's some examples of such resistors:
Depending on the circuit board footprint you probably could use plain 1206 resistors .. just make sure you get the ones with the proper orientation (terminals on the long side or the narrow side)
Here's a start link for you in UK (also check http://cpc.farnell.com with smaller selection but selling as little as 1pcs of some parts and cheaper or free shipping in UK) : http://uk.farnell.com/c/passive-comp...6-3216-metric-
Also ... make sure the resistor is actually bad, because you may confuse it for a short due to having so low resistance. Use the REL button on your meter to take out the resistance leads and then measure the resistor when it's desoldered from the board.
It should measure 0.1 ohms.
Later edit: You should also be able to squeeze 0805 resistors on the footprint, just may have to put a couple of blobs of solder on the pads to solder the smaller resistor well. Then you'd have a much wider selection.Attached FilesLast edited by mariushm; 06-03-2017, 09:02 PM.Comment
-
-
Hi
I am trying to repair an ancient Dell 2209WA Monitor which suddenly shut off with a pop sound. On investigation found that one of the fusible resistors had blown. Further investigation identified multiple components as faulty because of which the fusible resistor blew. Please refer the attached circuit diagram showing the components that were found to be damaged.
1. FR950 - blown fusible resistor - 0.2 Ohm 1W
2. Q950 - shorted Q950 MOSFET - 650V 10A N Channel Mosfet
3. R835 - Blown Resistor - 20KOhm SMD resistor
4. D930 - Shorted Schottkey Diode... -
Hi to all forum members,
Got this faulty 350 watt atx psu dirt cheap from a local online seller as i am keen to use it as a learning tool to repair faulty power supply.
The faulty part is quite obvious from the burn area near the 16pin KA7500 BD pwm. The fuse is still intact with good continuity.
Upon power on ac, there is 5vdc standby power on cathode of diode D14 and about 10vdc on cathode of diode D13.(This should be the aux power to generate the 12v and 5v rail.)
Initially i replace the two burned resistors near my marked red arrow to 200 ohm resistor... -
I am curious if a 0402 resistor could go from 43 ohm to 0. In electronics class and my experience a resistor can degrade and gain resistance all the way up to not being able to conduct at all. I have never heard of a resistor decreasing in resistance and becoming 0 ohm or a dead short… that's not the direction they fail… or so I thought.
I was attempting to remove a wson8 chip on an iMac motherboard and it required a lot of heat, on one side of the chip were 3 0402 resistors that were very close. I popped the chip out unintentionally out of the tweezers and sent those resistors... -
The resistor on this waterpik blew. I changed it with the a similar spec 47ohm 2 watt yageo resistor but it still keeps blowing the resistor. Checking with the multimeter the motor, capacitor, diodes, and thermal fuse all checked normal. Will a higher ohm resistor work better? What ohm resistor will work better to repair this waterpik? This video is showing the repair with a 56 ohm resistor https://www.youtube.com/watch?v=_J7_rV7ui1Y -
I have purchased an 100-240v AC/5v 2a DC adaptor from aliexpress,and a month ago It smelled burning when I plugin it powerstrip.
Since then, This AC/DC adaptor have been out of order.
But A few days ago,I replace 0.5 watt resistor with 1 watt resistor(1ohm) in this adapter.
After replacing resistor,It succeed to recharge all of android phone.And When I measure voltage on the two pins of USB port,It shows 5.5v
Is it okay to replace 1/2 watt resistor with 1 watt resistor in AC/DC adapter?
And Is there any possibility that it will suddenly explode as well as to be out...
Comment