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Difference in Testing an Appliance vs a Computer (failed to power up)

So I had a discussion with someone who works on Appliances for a living about a non post pc. I was told testing failed units (Appliances) is the exact same as testing a Failed pc. I'm doubting other then test power like 12v, 5v is the same between the two. They both use motherboards and some appliances use a cpu. But id like to know what are the major differences is testing the two and what are the same. I understand this not many may know the difference but just had to give it a shot because im doubting testing the two are exactly the same... 

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Well here is my opinion.

 

I agree with your friend.

Both have a power source that plugs into a power supply which converts power from wall power to something else.

Appliances essentially have computer components in them that run on firmware as opposed to software, but is functionally the same concept.

Appliances accept inputs via buttons and dials, where a computer used a keyboard and mouse to accept inputs, but still, we as humans punch keys and results happen.

 

When something is acting up, you try to reduce the problem down to a single source and then replace that source.

Dryer wont dry, narrow it down and replace the part.

Microwave wont turn on? Check power cord, wall power source, then internals, same steps as a pc.

Both can be a confusing hunk of metal to work on, both can have randomly occurring issues.

You would troubleshoot them in the same way essentially, modifying your steps according to the situation at hand.

 

And to take this further.

 

You would troubleshoot your car the same way. All have similar components in some way. They accept inputs from humans and do something accordingly.

 

Troubleshooting is troubleshooting.

Figure out how to make the problem reoccur so you can narrow the issue down to a single source of malfunction, then replace.

That's what troubleshooting is, narrowing down an issue until all that's left is what's broken.

Sometimes you can narrow it down to a single part and replace a couple to ensure resolution.

Sometimes you figure out half way through that its all dead and its best to go buy a new one.

 

Troubleshooting is troubleshooting. Its all the same.

 

99% of the time its more about a persons willingness to dive in and learn something, to be open to all the possibilities and to systematically work your way through an issue.

Whether its life or a pc, when things are not going as you expect, narrow down the root cause and do something about it.

Edited by cr8tor
spacing

Daily driver (looking to upgrade mobo and cpu spring of 2021)   --- The only time I sort by price from high to low is when I am shopping for CPU's and GPU's (looking for a cheap i7-7700k though)
Mobo: ASRock Z170 Extreme7+  CPU: i7-6700K  @ 4.2MHz  Cooling: Corsair H115i Hydro  Memory: TridentZ 32GB @ 3600MHz  GPU: EVGA 2070 FTW3 ULTRA+ (OC'd 50/300)  
PSU: EVGA NEX750B   Storage: (1)950 PRO 512GB (2)ADATA SU800 1TB  Keyboard: Logitech G910  Mouse: Logitech G502   Headset: Logitech G930 headset   UPS: APC XS 1300

Unraid box providing network routing, home automation services, and media services ( I love unraid!)

USB Key: SanDisk 16GB Ultra Fit  Mobo: Intel DX79SR Extreme+  CPU: i7-3820  Memory: 16Gb Kingston HyperX Predator  Storage: (cache)480gb Micron SSD (1)8TB HDD (1) 4TB HDD  
GPU: MSI GTX 1650 4GT LP OC (passed through to Emby)  NIC: Intel I350-T4 4-port Gb (passed through to PFSense)  UPS: APC PRO 1000
Docker Containers: Emby and Home-Assistant-Core  Virtual machines: PFsense ( I love PFSense!)

Family machines
Mobo: Asus Prime H310M-E  CPU: Intel Core i3-9100F  Cooling: Deepcool Gammaxx 400  Memory: Teamgroup Elite Plus DDR4 16GB  Storage: Silicon Power 1TB NVMe M.2  
GPU: Asus GTX 1660 Super 6GB or EVGA 1070 FTW 8GB  PSU: Thermaltake Smart 500W 80+  UPS: APC XS 1300


As well as a number of other machines, a ton of parts, miles of cables, and who knows what else!
Private message me for quicker assistance. I also build and ship custom machines at a really fair price.

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