Re: Board view file for Apple 820-2877-b
It was the first think that I did and couldn't find it..
Can you tell me where is 820-2877-[COLOR="Red"]b[/COLOR] since I don't see it?
The one posted here has many differences in board layout..Re: Board view file for Apple 820-2877-b
It was the first think that I did and couldn't find it..
Can you tell me where is 820-2877-[COLOR="Red"]b[/COLOR] since I don't see it?
The one posted here has many differences in board layout..Re: Board view file for Apple 820-2877-b
Joun
Senior Member
Last Activity: 02-01-2024, 01:29 PM
Joined: 07-22-2011
Location: Stavros,Thessaloniki
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Last edited by Joun; 08-10-2016, 02:59 PM. -
Board view file for Apple 820-2877-b
Hello
Is there any way to find board view file for 820-2877-b year 2010?
I have found an earlier one but not this.
Thank you -
Re: Samsung LE32M87BD - stuck in standby - blinking LED
This is what internet is for..
Replace that cap(it had ESR about 500 Ohms! ) and TV is working for some hours now..
Thank you!Last edited by Joun; 11-02-2015, 02:09 PM.Leave a comment:
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Re: Logitech Z506 power supply
OK, I don't need it anymore,it had a broken copper trace on bass volume..Leave a comment:
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Re: Logitech Z506 power supply
Nevermind, found it in this thread.....Leave a comment:
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Re: Logitech Z506 power supply
Thank you for answer.I was hoping it will be you who answers since I can tell you have a lot of knowledge..
I can trace it back(it is a little hard but I can do it) and I have the datasheet of the amplifier ic.And I have instruments to check capasitors and signal presence(esr meter and oscilloscope).
I think the problem is before that somewhere in the volume ic or in the opamps ..
I will check it tomorrow and write back.
Thank you!
P.S Do you know who the opamps are?The printing on them is very faint..Last edited by Joun; 08-22-2015, 01:06 PM.Leave a comment:
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Re: Logitech Z506 power supply
Since a lot of people are having problems with those speakers, here's mine:
A friend brought it to me because they didn't work at all..aOf course power supply was bad.
I replace it with another 15V supply and it seemed to be OK..
That happened 3 monthes ago.Yesterday he told me that the sub wasn't working at all so he brings it back and sure enough he is right.
I search it a little and realise that the amplifier ic for the sub doesn't get any signal in its input pin.
I can search it any more without its schematics so does...Last edited by Joun; 08-22-2015, 11:05 AM.Leave a comment:
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Re: Acer MotherBoard 07245-1M 48.4Z401.01M
Thank you.Leave a comment:
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Re: HP Elitebook 8440p flashes led 9 times
It was the charger to blame after all..It was defective( dj_ricoh mentioned that but I didn't realise it had a problem)
It didn't have any voltage(or whatever control signal) in center pin and the laptop looked like it had a bigger problem but it didn't.
I just short circuited the central pin with the + and it is working fine now.
The only problem is that the battery charges very slowly(at 200mA) but I guess it will need original charger for that to be fixed..Last edited by Joun; 05-13-2015, 02:03 PM.Leave a comment:
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Re: HP Elitebook 8440p flashes led 9 times
Yes,it was brought to my with the original charger,the one that it was working from the begining..
After that I power it up with my power supply so I can measure its current consumption.It behaves exactly the same on both cases.Leave a comment:
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HP Elitebook 8440p flashes led 9 times
Hello everyone.
I have this Elitebook which when I press power button it flashes its charging led 9 times and does nothing else..
I have it connected to my lab power supply and it draws only 5-6 mA..
The net is full with people with the same problem, but don't see any real solution .
The schematics is here:
[url]https://cdn.badcaps-static.com/pdfs/1f5c1f93106136a386989e44e037c6e5.pdf[/url] if it is any help.
Thank you.https://Hello everyone.<br /> I have...nothing else.. -
Re: Sony SDM-HS75P
No I didn't..
If I had, I would post solution here..Leave a comment:
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Re: Acer ASPIRE 5520g (optical drive not showing in bios)
Hello
It is common for that model to have problem and not showing optical drive.
The problem is in motherboard not in drive.It is also very common that it can not even pass initial screen(press F2 .. etc ) if you keep the drive in its place.
If you remove it it boots without any problem.Leave a comment:
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Re: LG L1953S doesn't power on
Are they 105 Celcius rated?Leave a comment:
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Re: LG L1953S doesn't power on
Because they were defective in mine..And you can see here:[url]http://www.ebay.com/itm/LG-L1953-Monitor-repair-Kit-6Capacitors-for-power-supply-board-/181072535104?pt=US_Monitor_Replacement_Parts&hash=item2a28c39e40[/url]
which other caps are most likely to go down..Re: LG L1953S doesn't power on<br />...40[/url]<br />Leave a comment:
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Re: LG L1953S doesn't power on
At ebay..But maybe you want to replace C205 and C206 first..Leave a comment:
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Re: Problem with Acer Aspire 5720
I have fix 4 or five of them..It is a classic symptom of bad soldering on northbridge chip.
It is the big bga chip right next to the CPU,they share the same pipeline.
You can be sure if you press the on button and at the same time you apply pressure(rather hard) on it..
You have to reflow or better reball to fix it.
P.S I have just saw you are Greek,you have PM.Last edited by Joun; 12-20-2012, 12:32 AM.Leave a comment:
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Re: Capxon strikes once again
Well mine is(was) on primary(right after bridge rectifier)....Leave a comment:
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Re: Capxon strikes once again
It has happened to me more than once..
In fact the biggest ESR I have seen is on a primary cap(meter working fine.. )...Leave a comment:
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Re: My new "Blue" ESR tester
^^ Yeah,right..You are a God in multimeter reviewing or am I wrong?
You have graduate from technical high school(electician) so you have much more knowledge in electronics than everyone here(and in other forums),right?Last edited by Joun; 10-18-2012, 12:46 AM.Leave a comment:
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