Hi everyone I have an Microsoft Surface RT2 1572, board #E49068. I bought a new replacement connector to get it working again, buy when I was removing the bad connector one of the pads lifted, not sure if it is a dummy pad or if it connects to the board. I looked and can't see any copper trace where the pad lifted. If anyone has a pinout or any info on this it would be greatly appreciated.
I added a photo of the connector pads. Thanks in advance for your help....
rattman
Member
Last Activity: 04-24-2025, 08:37 PM
Joined: 12-11-2015
Location: Ohio
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Microsoft Surface RT2 1572 LCD/DIGITIZER connector pads
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Re: Black & Decker 1000 Watt 8.5 Amp inverter help.
Hi everyone sorry it has taken me a while since my last post, my Mom passed away, haven't felt much like repairing anything. I did manage to repair my inverter. I replaced (IC1 Sop-8, Digikey #AP358SGDICT-ND) and (IC4 Sop-16, (Digikey #KA7500CDTFCT-ND), this did fix my problem and my inverter is working again.
Thanks again to all those who helped me fix this inverter. -
Re: Black & Decker 1000 Watt 8.5 Amp inverter help.
Hi sam_sam_sam.
Here are the pictures of the bottom and the top of the inverter.
The Mosfets on the right in pictures 29 & 31 are the ones I replaced.
Thank s again for your help.
Sorry for not uploading the pictures, not all here
this migraine is kickin....Leave a comment:
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Re: Black & Decker 1000 Watt 8.5 Amp inverter help.
Hi R_J.
I ordered the Mosfets from Digikey, part #IRF640NPBF-ND.
Repaired the traces, installed the mosfets and replaced a few
resistors. Inverter is back together, hooked it up and turned it
on and have a green light but has no output with a lamp hooked
up to it, but when I shut the switch off the light comes on briefly.
Any ideas? Thanks in advance.Leave a comment:
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Re: Black & Decker 1000 Watt 8.5 Amp inverter help.
Hi R_J.
I found part of the mosfet, it looks like IRF640B.
Would be nice to have a schematic for the
burned traces or even a pic of the traces.
Thanks again.Leave a comment:
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Black & Decker 1000 Watt 8.5 Amp inverter help.
I have a Black & Decker 1000 Watt inverter,
Model #VEC049DCB, does anyone know where I can
get a schematic diagram/parts list? Need part number
for output MOSFETs that blew out, and also for a few
traces that burned.
Thanks in advance for your help. -
Re: YLP-013 450W capacitor value.
Hi momaka. I checked the resistance on the transformer and the resistance readings are less than 1 ohm. The components check okay. Checked the voltage on the purple wire but it is not 5 volts. The voltage goes from about 2.71 volts to 3.04 volts, goes up and down constantly. Thanks again for everyone's help.Leave a comment:
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Re: YLP-013 450W capacitor value.
Got my parts in and replaced Q4, Q7, and C28. There are no shorts, checked with a 75 watt light bulb across fuse connection. Installed the fuse jumped the green wire and a black wire, nothing. Even tried with a hard drive hooked up for a load, no go. With the jumper in place checked for 5v and 12v, nothing. I will retrace my steps to see if I missed something.
Q4 has a crack under the part number around the side to the back.
Thanks again for your continued help and input.Leave a comment:
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Re: YLP-013 450W capacitor value.
I checked the resistor, (R65=100K Ohms) next to/behind capacitor (C27=10 nF), it measures 99.1K ohms.
Since C27 is 10 nF I agree that C28 should be about 0.47 nF 1KV. Checked Q4 for an open/short, measured
okay but has a crack across it so I'm gonna replace it. Ordered the replacement parts and will let you
know how it goes.Last edited by rattman; 04-04-2019, 09:40 AM.Leave a comment:
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Re: YLP-013 450W capacitor value.
Thank you for the input momaka.
I will check the value of that disc capacitor above C28
to see if its value is 10 nano, & check Q4 to make sure
it is not open or shorted and also that resistor.
I will post the results and let you know what I find.
Again thank you for the info.Leave a comment:
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Re: YLP-013 450W capacitor value.
It does help me quite a bit, thank you R_J.Leave a comment:
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Re: YLP-013 450W capacitor value.
Here are a few more pictures of the power supply with a couple numbers on the top in Pic #8 that might help. If someone has this power supply I would appreciate it if you could look at the C28 disc capacitor and see what the value is on that capacitor. Thank you in advance....Leave a comment:
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Re: YLP-013 450W capacitor value.
Thank you for the reply momaka.
Trying to save a few bucks by repairing it, but it appears that YUELIN does not want you to repair it as there are no schematics to be found anywhere.
I have an EDS in circuit cap checker that I checked the caps with, they appear to be okay.
I do use the light bulb trick when repairing TV's, but did not think to use it on power supplies which is a good idea, thanks for the heads-up.
When the power supply shorted out the computer was off. It came with a mid tower Power-up computer case I bought...Leave a comment:
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Re: YLP-013 450W capacitor value.
I apologize, it is a power supply out of a desktop computer.
Here are a few pics of the power supply with heat sink in
and out of the supply board. Pic #3 shows the damage of
Q7, and the location of C28 that was removed. I cleaned
the board up a little to see the locations of the damaged
components. Any help would be appreciated.
Thank you....Leave a comment:
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YLP-013 450W capacitor value.
Hi Everyone.
I have a YLP-013 450W power supply, Rev 2.2
and I'm looking for the value of C28. This disc cap
disintegrated When Q7, part #C5027 shorted out
which is connected to the collector of Q7.
Thank you in advance. -
Re: atx YLP-013 Repair help please
I know this is an old post. I have the same power supply
450 Watt and was wondering if you know the value of C28?
Hope I'm in the right place. Thank you in advance.Leave a comment:
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A little about me.
Hi Everyone, My name is Chris. I have been working on Electronics for about
11+ Years. I repair Electronics for Family, Friends and I even saved a few from the dumpster here and there. I have always loved Electronics since I was a Kid. Repairing electronics helps relieve stress, but also keeps me thinking.Leave a comment:
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