SM-Piyes90
Senior Member
Last Activity: 02-17-2017, 03:48 PM
Joined: 02-22-2014
Location: Casablanca
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Why hello, I noticed a while ago you posted a thread about your hung chang 5502 I was womdering if you have the full schematics? -
Re: How does GPU get bottlnecked by CPU ?
Thanks for the time you gave , was a long read .
All i can say is its hard to upgrade a pc component without the others with it .
It would be much easier to just make a new build . -
Re: Dumbest 'electronic' mistake you ever made
I remember been repairing a pcb , after i finished i let a tiny drop of saliva on it , i just left like that thinking it will just dr ( no big deal ).
Just after powering it up , everything worked well , the repair was good .
After that the cliend returned it , and guess what , Whole set of IGBTs was gone .Last edited by SM-Piyes90; 11-20-2016, 05:33 PM.Leave a comment:
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How does GPU get bottlnecked by CPU ?
Hello everyone .
Its quite obvious that every gamer's concern when building a PC is to avoid bottleneck issues .
The problem is how to avoid that with all those CPU and GPU variables out there .
As far as i understand the GPU takes power from CPU .So does it means that cpu clock must be higher than the GPU clock ? or the memory clock ?
Also is the ram related to this ?
For example will a C2D @ 2.33 Ghz with 2 gb of ram be enough to power up a gtx 460 without bottleneck ? :
GTX 460 specs :
GPU frequency :...Last edited by SM-Piyes90; 11-20-2016, 05:23 PM. -
Re: Dell NPS-210AB A Rev 1 PSU blown resistors
Thanks , i will happily give any infos about your blown parts .Leave a comment:
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Re: Dell NPS-210AB A Rev 1 PSU blown resistors
Hi thanks a lot but it would be greatly apprecuated if you take a clean picture of it....Leave a comment:
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Re: Dell NPS-210AB A Rev 1 PSU blown resistors
I appreciate that < thanks...Leave a comment:
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Re: Dell NPS-210AB A Rev 1 PSU blown resistors
Hi again OP .
I hope you still have the PSU in hand because i have the values of the burned parts , but i would like you to give me the values for the 3 resistors near the output cables just underneath the end of the rectifiers radiator ( R519 - R520 - R521) .
Thanks in advance.Leave a comment:
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Re: Smps converter showing weird behavior !
I will check the 15 v section as well as the part related to the gate driver ....Leave a comment:
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Re: Smps converter showing weird behavior !
OK here it is :...Last edited by SM-Piyes90; 03-31-2015, 10:37 AM.Leave a comment:
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Re: Smps converter showing weird behavior !
could the problem be the lm324 ?Leave a comment:
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Re: Smps converter showing weird behavior !
Hi again everyone and thanks for your comments .
As a response to your previous questions , i was wrong about the relay , actually the relay turns on as soon as the temp led goes off but the relay seems to energize very slowly and not instantly .
I get 13 volts , 320 volts , but i don't know about the 15 v HAUT (?) (top left) , maybe used for IGBTs gate triggering ?
Anyways the conversation is still open for more ideas guys .Last edited by SM-Piyes90; 03-29-2015, 06:39 AM.Leave a comment:
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Smps converter showing weird behavior !
Hi everybody .
I have recently been busy trying to resolve a problem concerning a high current smps converter.
The problem is when I power the unit , I get :
1- no fan rotation.
2- over temp led that lights up fir 5 seconds and goes off as soon as a relay de-energizes ( RL001A) .
I checked the fan circuit witch mainly consists of a tip122 transistor , but every component around is good .
Here is a schematic , and thanks in advance .
...Last edited by SM-Piyes90; 03-21-2015, 02:39 PM. -
Re: Need help testing an oscillator.
I think he is talking about a console stuff , the j-r programmer is supposed to program a RGH chip used on xbox 360 consoles .Leave a comment:
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Re: CRT oscilloscope display problem !!
Hi again everybody. Am back to the scope repair .
This time i got the real5502 schemes.
Can someone here explain how the signal is transmitted from the input to the HV crt screen?
Here are the schemes :...Last edited by SM-Piyes90; 01-09-2015, 01:59 PM.Leave a comment:
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Re: Halogen lamp PSU keeps burning fuse !!
Exellent BUDM . i guess i need to read more about the smps designs.Leave a comment:
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Re: Halogen lamp PSU keeps burning fuse !!
Yes bro , you got the idea .
Its just that input voltages that needs to be known exactly , because i don't grasp a 50 v cap having only 16 volts .Leave a comment:
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Re: Halogen lamp PSU keeps burning fuse !!
I have just took a look at it . it appears that the mosfets are switching the half rectified voltage ....Leave a comment:
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Re: Halogen lamp PSU keeps burning fuse !!
Nop only from + to - thats <1ohm ....Leave a comment:
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Re: Halogen lamp PSU keeps burning fuse !!
You are right stj .
Just checked the bottom tracks and also powered it up with 24 AC , i get 16 volts on each capacitor that are in series, also the IC is getting around 15 volts .
But why they have used 50 v caps if its only for 16 volts ? maybe its not 24 volts.Last edited by SM-Piyes90; 01-04-2015, 07:01 PM.Leave a comment:
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