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#1 |
Badcaps Veteran
Join Date: Oct 2019
City & State: Morcellement
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![]() Hey guys, am fairly new to signal level troubleshooting.What diagnostic card would you recommend for laptop troubleshooting? Any other good piece of equipment I should have to help with troubleshooting PCH, etc?
I have been looking at a few PCI diagnostic card but can't really decide which one would be more appropriate. This one keeps popping up with most search results: https://www.aliexpress.com/item/3282...archweb201603_ Any help is greatly appreciated. |
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#2 |
Badcaps Veteran
Join Date: Sep 2014
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![]() In my professional work I don't find them particularly useful for diagnosis, but then most of my computer repair work centres around macbooks.
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#3 |
Badcaps Veteran
Join Date: Oct 2019
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![]() What kind of components/chips would I need to have in stock (besided having donor boards) if I wanted to start with macbooks?
I guess the diagnostic card would be more helpful with non apple products then? |
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#4 |
Badcaps Veteran
Join Date: Oct 2015
City & State: Mainboard
My Country: Laptop
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![]() In general, diagnostic cards are not useful in laptop repair.
At the beginning, only have donor boards. then, you will find out what else do you need. |
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#5 |
Badcaps Veteran
Join Date: Oct 2019
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![]() I actually would like to learn more about troubleshooting mostly North Bridge, South Bridge, PCH and CPU; hence my interest about getting a diagnostic card.
Is there such a thing about a definite diagnostic for those (especially when it comes to a partially dead PCH, etc) or is it more of an "assumption/likelihood" based on measurement of signals? |
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#6 |
Badcaps Veteran
Join Date: Oct 2015
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![]() since most signals are not transferred out of CPU/PCH, we have to diagnose based on assumption/likelihood sometimes.
If you want to learn laptop troubleshooting, forget about diagnostic cards and watch a number videos on "laptop voltage measurement". |
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#7 |
Badcaps Veteran
Join Date: Oct 2019
City & State: Morcellement
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![]() I did watch those a while back and learned quite a bit. Most PCH videos tend to be more reballing/replacement oriented though.
So I guess am not getting a diagnostic card after all. Thank you for your suggestions! |
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#8 |
Badcaps Veteran
Join Date: Sep 2014
City & State: united kingdom
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![]() You will find a good digital test meter indispensable, perhaps a decent storage scope although most switching frequencies to be found will be outside the range or most test gear. The other thing that will help you a lot is access to service manuals as they will contain information on component layout and test points.
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#9 | |
Badcaps Veteran
Join Date: Oct 2019
City & State: Morcellement
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#10 |
Badcaps Veteran
Join Date: Sep 2014
City & State: united kingdom
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Line Voltage: 240 VAC 50Hz / 110 VAC 50 Hz and 415 VAC 50Hz
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![]() Then I am not really sure why you would need or want a diagnostic card(s) which represent a considerable downgrade over the test gear you already have. But if they are a must have for you then the one you have listed is cheap enough and probably as good as anything else on the market, buy it, play with it and then realise why they are mostly redundant. If there are any specific repair queries you have then post them up on the forum as these places are an invaluable source of information.
The other thing you might want to add is a logic analyser, again many of the data lines operate above the bandwidth of the cheaper logic analysers, that said I find one useful for the work I do with vintage computer equipment, you can of course use am oscilloscope as a partial substitute for an analyser to look at two or four data lines at a time. Last edited by llonen; 07-07-2020 at 11:23 AM.. |
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#11 | |||
Badcaps Veteran
Join Date: Oct 2019
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#12 |
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![]() A number of new systems do not have PCI slots but have PCI Express slots; certain systems also output diagnostic codes via the SMBus available on PCI Express (and most PCI Express Mini and M2) slots.
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My first choice in quality Japanese electrolytics is Nippon Chemi-Con, which has been in business since 1931... the quality of electronics is dependent on the quality of the electrolytics. |
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