I'm not an electrician but I some clever heads together

[beachlover]

Hi everyone
I have the strangest problem that no matter who I ask in the trade they seem to scratch their head and tell me to buy a surge protection unit. I have bought a million surge protections units Just sayin

Here is the problem and some of things done over the past three years to try to resolve it ....

I seem to be getting some sort of problem that is blowing up my computers. No amount of electrical test seem to find the faults. It's not just bad components or the company's where I buy the machines either.
I have estimated Over 16 devices blown and 47 repairs since 2014. This is from five different companies where I have purchased computers with a warranty.
Computers last typically for anything up to two days or two weeks before failing. This most common failure benign burnt chips on the GPU s

It is my understanding The modern motherboards have built in surge protection and they go into protection mode when a surge is detected. I have had this happen but when I next switch on the computer the GPU is damaged or becomes damaged.

Work carried out on my electricity by the electrician working for the housing association house I live in

1 - four different surge protectors bought
2- ups bought with surge protection
3 - 2013 a full electrical test on RCD panel and all sockets - passed
4- 2015 another full electrical test - passed
5- electric supplier monitored for surges from outside- none detected
6- two sockets faceplates replaced (the ones used for my computer)
7 - independent electrician hired tested sockets. No fault found.
8 - Eco Max Home Voltage optimiser fitted on RCD panel and set to 230v

Other information.
No other devices in the house fail and we have two HD TVs, a MacBook, two iPhones, router, and the usual lamps, kitchen equipment. New mouse,keyboard,HDMI cables,USB cables purchased

UK based electrical system with RCD panel with an additional Volt regulator fitted. We have 240 volts coming into the house
The housing association also fitted a gadget that regulates the volatage 230

On the last occasion I saw the the computer component frizzle smoke and could see the damage. I'm really worried about a fire risk
I have on occasion see sparks come from the switch on the outlet.

I would appreciate your thoughts on why this is happening to me as three independent electrical test and Electricians tell me they can not find or think of what could be causing it.

No computing for me for a while

Many thanks

 

[The Ghost]

I think I may be inclined to discuss this with your DNO who provide the network for your electricity. It seems power quality analysis needs to be done. This is a problem with electronic equipment that over time is going to get worse. As various electronic systems increase so the problem will. I am no expert in this area but what may be happening is there are harmonic currents affecting your equipment. I offer this very tentatively as I say I am no expert. It may be that you are near a source of equipment like a large office block or something of that order that is distorting the sine wave of your supply. This inevitably leads to components frying in computers and power supplies. Your DNO can monitor your supply for a week and give info regards the nature of your supply. However I think you need someone with a power quality analyser to see if you are unduly affected by harmonic distortions (I think they are called) It is a more technical area than I would usually deal with but someone may be able to take this further. Most electronic equipment distorts the sine wave supplied and can sometimes turn it into a different type wave which in turn can and will affect sensitive electronic components.

 

[snowhead]

Have you got a wired network in the house?

Or do you live in the Isle Of Wight (I.O.W in Forum name?) anywhere near Radar?

Does it only happen when you use the computer?

 

[Lucien Nunes]

If it is the GPU or any parts of the MoBo or plug-in cards that are failing, it is unlikely to be a power quality issue. Voltage surges on the AC mains will normally damage the power supply unit in the computer only. This isolates and converts the incoming AC power to the low DC voltages required by the computer. The PSU is able to withstand some thousands of volts between one side and the other, and will tend to go up in smoke itself before anything breaks down to the point of spitting out damaging voltages to the motherboard.

If the failures are specific to the GPU, are there long cables running to displays / projectors etc? Are the displays fed from the same power circuit? Do you have any signs of circulating ground currents (bad audio hum, radio interference, sparks when you plug the graphics cable in?)

 

[Pete999]

Voltage Stabaliser maybe a useful item to consider

 

[Pat H]

To protect computers I'd go the UPS route. The good ones convert Mains to battery voltage and then back to mains so the computer isn't directly connected to the mains supply. That prevents brownouts and spikes being an issue. And should you lose power you get a little run time before it quits.
And no modern motherboards can't cope with supply fluctuations or spike. The Power supply unit inside them have limted protection.

But its not just power that maybe the issue. Are they network connected? could you be having spikes down the network cables?

 

[beachlover]

Thanks for all the replies
@Vortigern
Does DNO mean the company who supply's the electric on the distribution side? If so that is SSE and they already put a monitoring thing on the meter and on the socket where the computers plugs in .... they found nothing.

I'm not near any big places like a factory. I don't know what
I live in a cul de sac in a tiny village

@snowhead
Yes it the IOW and there are some radar mast on the fire station. what it the significance and why do my neighbors not have the same problem

@ Lucian
I have had laptops fail to but as modern laptops have the GPU soldered to the motherboard the who motherboard has been replaced. Since getting desktop PC I can see visually that the GPU is frazzled. I was present when the GPU sizzled popped and smoked . The PSU seems ok
I'm connected via wifi
The monitor is only a few feet of HDMI cable
I have done all the obvious like bought new cables new USB keyboard and tried using a different monitor
It still happens

@Pat H
I have a powerwalkwr ups and it still happened
The only network I have is via wifi

Set is tplink modem router into master socket in the hall
All other devices are connected via wifi
This is what is puzzling
Wifi connected are roku device and tv
Apple TV
iPhones
iMac
Why do these not blow? Just the GPU?

However I have had powerline adapters and they blew
We opened them up and all the little capacitors were melted like ice cream

 

[Pat H]

Well there is your clue. If powerline adapters are blowing up you have problems.

 

[beachlover]

I'm amazed by all your help guys
Thank you so very much
@Pat H
By powerline adaptors I mean those little things you can use to send Ethernet down your electric cable so you don't need wifi
What is the significance

Please bear with me as I'm posting on my iPhone

The electrician is xoming on Monday
Lo think he's been three times before and I think he says the only thing left to do is a complete rewire
What should I ask him?

It's obviously an intermittent problem otherwise it would have been picked up on his previous test
He is a good fellow but he knows electric and not computers

Kind regard

 

[The Ghost]

Yeh Beachlover I do mean the supplier. When you say GPU you mean the graphics card right? If that is the case your bios may have been overclocked? (grasping at straws) or some other incompatible timing setting or voltage setting for your board. Do you tweak? Hmmm?
Either that or the gov is underneath you building another CERN thing.

 

[Jamchiv01]

The whole time you have had this issue, have you had the same PSU in the computer, or the same model?

Also what's the Rating of the power supply unit in Watts. Average is 350W - 450W. It will be on the PSU itself.

 

[beachlover]

@ Lucian
Yes yes
I see sparks from the socket sometimes when I switch it on !!!!
What does this mean ???

 

[beachlover]

The whole time you have had this issue, have you had the same PSU in the computer, or the same model?

Also what's the Rating of the power supply unit in Watts. Average is 350W - 450W. It will be on the PSU itself.

No sir
As I said in my OP

It has been various computers and various PSUs and even had 4 laptops fail

 

[beachlover]

Yeh Beachlover I do mean the supplier. When you say GPU you mean the graphics card right? If that is the case your bios may have been overclocked? (grasping at straws) or some other incompatible timing setting or voltage setting for your board. Do you tweak? Hmmm?
Either that or the gov is underneath you building another CERN thing.

no I don't over lock anything
I only play WOW so I don't need to tweek
And bear in mind this has happened to this many different computers
2014 Dell
Two desktop computers and 6 replaced motherboard and GPU

2014 - 2015 pcspecialist
Two desk top computers
Over 15 returns and repaired motherboard and GPU
Plus a reconditioned laptop I bought as a spare no longer working after two months

2015 - 2016 pcspecialist
Two laptops
Over 15 returns and replaced motherboard and GPU
Plus two reconditioned laptops And two reconditioned desktops I bought as spare to make sure I could get online while repairs were being carried out.
1 X tablet no longer working
3 x powerline adaptors

August 2016
Chillblast
Two desktops
10 returns since august with motherboards and GPU failures

15 Nov 2016
AWI - it
One desk top bought in November lasted two days
Currently under repair

21 Nov 2016
Bt homehub router fail after 24 hours use.

 

[Jamchiv01]

Do you have a lot of computers plugged into the same circuit?