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Search: Posts Made By: bohaboha
Forum: General Electronics Technical Discussion 02-06-2022, 05:10 PM
Replies: 24
Views: 1,249
Posted By bohaboha
Re: can a flyback transformer for USB charger isolate?

thank you momaka for your suggestion i was going to ask the same thing as sam_sam_sam if you could? and please can you say what you thought it was?
Forum: General Computer & Tech Discussion 02-02-2022, 07:00 PM
Replies: 30
Views: 1,187
Posted By bohaboha
Re: Trying to renew my old computer

I had everything in place all the time but I still do not understand how it can be so with the other motherboards it usually starts right away.not this time
Forum: General Computer & Tech Discussion 02-02-2022, 05:56 PM
Replies: 30
Views: 1,187
Posted By bohaboha
Re: Trying to renew my old computer

Hi all thanks for your advice the problem is solved it was apparently a corrupt HD that caused all the misery now with another HD everything works so once again thank you so much
Forum: General Computer & Tech Discussion 02-02-2022, 02:49 PM
Replies: 30
Views: 1,187
Posted By bohaboha
Re: Trying to renew my old computer

The BIOS chip seems to be a Macronix MX25L3206EM2I-12G have read on Community Intel.com
Forum: General Computer & Tech Discussion 02-02-2022, 02:28 PM
Replies: 30
Views: 1,187
Posted By bohaboha
Re: Trying to renew my old computer

Have read around but it seems to be quite cumbersome and not safe now I'm talking about direct programming to chips therefore this motherboard does not respond to usb, hdmi or or speakers not even...
Forum: General Computer & Tech Discussion 02-01-2022, 07:39 PM
Replies: 30
Views: 1,187
Posted By bohaboha
Re: Trying to renew my old computer

I have started led lights, fan working but nothing on screen also no usb that responds the black ones I do not have the other usb yet, no sound either, do not know what to do next. .
You wrote about...
Forum: General Computer & Tech Discussion 02-01-2022, 09:20 AM
Replies: 30
Views: 1,187
Posted By bohaboha
Re: Trying to renew my old computer

to everyone who helped, I put it all together but it does not work exactly the same as before. I wonder if I force the start using a bridge on the power supply instead of the start button it does not...
Forum: General Computer & Tech Discussion 02-01-2022, 09:11 AM
Replies: 30
Views: 1,187
Posted By bohaboha
Re: Trying to renew my old computer

I do not understand what you mean
Forum: General Computer & Tech Discussion 02-01-2022, 07:36 AM
Replies: 30
Views: 1,187
Posted By bohaboha
Re: Trying to renew my old computer

Topcat it is as you say the socket pins are good I have compared with something else they should be so.battery has replaced with a new one now we will see what happens will come back later
Forum: General Computer & Tech Discussion 01-31-2022, 03:43 PM
Replies: 30
Views: 1,187
Posted By bohaboha
Re: Trying to renew my old computer

have not bought got it for free complete with cpu mounted and 8gb Ram
Forum: General Computer & Tech Discussion 01-31-2022, 03:36 PM
Replies: 30
Views: 1,187
Posted By bohaboha
Re: Trying to renew my old computer

Hi Stj as you said so the battery was dead encapsulated one. I have examined the psu socket's pin momaka asked me to do the upper half is straight and the lower half looks to be curved but the whole...
Forum: General Computer & Tech Discussion 01-30-2022, 09:15 PM
Replies: 30
Views: 1,187
Posted By bohaboha
Re: Trying to renew my old computer

Hi momaka and thanks for all the advice.1) mothercard lights up whith the power cord ,presses on start no fan, power supply is ok tried with jumper and it works. Bios jumper is on normal Cpu: i3 and...
Forum: General Computer & Tech Discussion 01-28-2022, 01:24 PM
Replies: 30
Views: 1,187
Posted By bohaboha
Re: Trying to renew my old computer

thanks Topcat and RJARRRPCGP how can I do when it does not start and the rest how do I do? RJARRRPCGP it lights up but no fan that works I use integrated video cards RAM can I reset
Forum: General Computer & Tech Discussion 01-28-2022, 11:25 AM
Replies: 30
Views: 1,187
Posted By bohaboha
Re: Trying to renew my old computer

no one can advise me? all advice is warmly welcome
Forum: General Computer & Tech Discussion 01-28-2022, 08:12 AM
Replies: 30
Views: 1,187
Posted By bohaboha
Trying to renew my old computer

hi have installed a motherboard Intel desktop DH67CF which I think unused but pc does not start tried first with power supply (corsair tx 650) then with an another (ACE model: 500T) thought it was...
Forum: General Computer & Tech Discussion 01-26-2022, 07:01 AM
Replies: 2
Views: 384
Posted By bohaboha
help with Mio-266 single board computers

does anyone have an idea for Mio-2261 (single board computers)? grateful for all the info you can give
Forum: General Electronics Technical Discussion 01-17-2022, 05:39 PM
Replies: 24
Views: 1,249
Posted By bohaboha
Re: can a flyback transformer for USB charger isolate?

eccerr0r the tube led lamps should be out of function but the circuit itself is perfectly ok as myself i picked old led lamps from the environmental room that we have here where people throw what...
Forum: General Electronics Technical Discussion 01-17-2022, 06:23 AM
Replies: 24
Views: 1,249
Posted By bohaboha
Re: can a flyback transformer for USB charger isolate?

https://www.youtube.com/watch?v=rhcaMuePo_o
Forum: General Electronics Technical Discussion 01-17-2022, 06:20 AM
Replies: 24
Views: 1,249
Posted By bohaboha
Re: can a flyback transformer for USB charger isolate?

I have seen several on youtoube but one was very interesting: DIY Backlight / LED Tester from LED tube .Watch it and say what you thought
Forum: General Electronics Technical Discussion 01-16-2022, 08:10 PM
Replies: 24
Views: 1,249
Posted By bohaboha
Re: can a flyback transformer for USB charger isolate?

so you think it's easier with back to back line frequency transformers? what size transformer should be able to have in this case
Forum: General Electronics Technical Discussion 01-16-2022, 04:47 PM
Replies: 24
Views: 1,249
Posted By bohaboha
Re: can a flyback transformer for USB charger isolate?

I have several 5v chargers I will disassemble some take pictures then you help me to choose the right one
Forum: General Electronics Technical Discussion 01-16-2022, 03:52 PM
Replies: 10
Views: 523
Posted By bohaboha
Re: mpxgmf 40/100/21 safety?

thank you petehall347 and stj
Forum: General Electronics Technical Discussion 01-16-2022, 03:29 PM
Replies: 24
Views: 1,249
Posted By bohaboha
Re: can a flyback transformer for USB charger isolate?

it is a diy tester from a led lamp circuit that needs to be isolated for safety but adding two identical voltage line frequency transformers will be clumsy if they are not small. can you use a small...
Forum: General Electronics Technical Discussion 01-16-2022, 10:41 AM
Replies: 24
Views: 1,249
Posted By bohaboha
Re: can a flyback transformer for USB charger isolate?

Hi sam sam sam, eccerr0r and redwire and thanks for your answers it is intended for general use also to test black light without disassembling in terms of flyback transformer I thought if it is...
Forum: General Electronics Technical Discussion 01-16-2022, 06:19 AM
Replies: 10
Views: 523
Posted By bohaboha
Re: mpxgmf 40/100/21 safety?

here some pictures
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