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First steps on Fault Finding

hobbit666

OK i'm a computer technician and happy taking a PC/Server etc apart and finding the fault and just replace that part i.e. Memory/PSU/DVD etc.  I'm happy to replace a screen in a DS or Phone etc

 

So since i work in IT everyone things i can repair anything that has Electricity flowing throught it so i've been asked can you fix my TV/Microwave/Car!/Monitor etc etc.  My reply NO! ask an electrician lol

 

 

I want to learn more now.  So i've said yes to fixing a few item but need help working out what's wrong with them but don't know where i should start probing image

 

So what i've got is a DS - Simple game slot broken so new one ordered and i've got a Solder Station ready to fix it.

 

 

These are the ones i need help with:-

 

Not so simple is a Leappad that when you switch on the screen flashes and then the unit goes off.  So i'm thinking Fuse? Loose screen connection (see this on a DS)

Also to a cheap Ebay tablet that will not charge - Thinking Charge Port damaged?

 

How would you go about fault finding on these two with the problems described?

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  • > ...a Leappad that when you switch on the screen flashes and then the unit goes off.

    >  So i'm thinking Fuse? Loose screen connection (see this on a DS)...

     

    Taking a guess that the Leappad in question is one of the newer ones with rechargeable batteries, the first step to take is to check the charger/power adapter - if it comes with one. Only equipment you need for this is a multimeter; if the charger/power adapter is found to be good (working voltages are usually always listed on a label on that unit), then the next step will involved working on the Leappad, again not knowing exactly what model you refer to makes it difficult to suggest more definitive troubleshooting info, but with luck these devices will have a cover accessing the battery pack, if not then it is time to open the device and carefully check the insides minding any connection wires or cables between components, battery pack should be easily identified - try finding any part number imprinted on it, could be just simple AA sized rechargeable batteries which would be not much of a hassle to replace, recharge and try powering up the unit. It is rare to find fused power connections on devices like the Leappad, if any fuses are to be found they would probably be inside the charger/adapter.

     

    > Also to a cheap Ebay tablet that will not charge - Thinking Charge Port damaged?

     

    Same scenario as above - start with the charger/power adapter. If that's good next thing is to review the state of the rechargeable battery pack, replace with spare if possible and try the device.

     

    -- RP

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  • > ...a Leappad that when you switch on the screen flashes and then the unit goes off.

    >  So i'm thinking Fuse? Loose screen connection (see this on a DS)...

     

    Taking a guess that the Leappad in question is one of the newer ones with rechargeable batteries, the first step to take is to check the charger/power adapter - if it comes with one. Only equipment you need for this is a multimeter; if the charger/power adapter is found to be good (working voltages are usually always listed on a label on that unit), then the next step will involved working on the Leappad, again not knowing exactly what model you refer to makes it difficult to suggest more definitive troubleshooting info, but with luck these devices will have a cover accessing the battery pack, if not then it is time to open the device and carefully check the insides minding any connection wires or cables between components, battery pack should be easily identified - try finding any part number imprinted on it, could be just simple AA sized rechargeable batteries which would be not much of a hassle to replace, recharge and try powering up the unit. It is rare to find fused power connections on devices like the Leappad, if any fuses are to be found they would probably be inside the charger/adapter.

     

    > Also to a cheap Ebay tablet that will not charge - Thinking Charge Port damaged?

     

    Same scenario as above - start with the charger/power adapter. If that's good next thing is to review the state of the rechargeable battery pack, replace with spare if possible and try the device.

     

    -- RP

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