Forum: Troubleshooting Desktop Motherboards, Graphics Cards, and PC Peripherals
06-13-2022, 04:26 AM
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Replies: 2
Views: 116
How to program IR3567B and similar?
Hi guys
Does anyone know anything about programming these multiphase VRM controllers? IR3567B
I have a couple of graphics cards here (RX 480) that seem to have faulty chips but I was told that...
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Forum: BIOS Requests ONLY!
06-13-2022, 04:14 AM
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Replies: 7
Views: 281
Re: Medion E2215T BIOS Password problem
I desoldered the BIOS chip and read the contents (before seeing the suggested password form SMDFlea) :facepalm:
Seeing as I already removed it, here is the original file (attached)
Does someone...
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Forum: Troubleshooting Audio Equipment
06-13-2022, 03:51 AM
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Replies: 12
Views: 395
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Forum: Troubleshooting Audio Equipment
06-01-2022, 03:18 PM
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Replies: 12
Views: 395
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Forum: Troubleshooting Audio Equipment
05-23-2022, 04:53 AM
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Replies: 12
Views: 395
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Forum: Troubleshooting Audio Equipment
05-22-2022, 04:36 AM
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Replies: 12
Views: 395
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Forum: Troubleshooting Audio Equipment
05-05-2022, 03:28 AM
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Replies: 6
Views: 395
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Forum: Troubleshooting Audio Equipment
05-04-2022, 04:27 AM
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Replies: 6
Views: 395
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Forum: Troubleshooting Audio Equipment
05-04-2022, 04:20 AM
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Replies: 6
Views: 395
What 'class' is this Hill Audio DX3000 Amplifier?
Hi guys, this is general query really
So I have a Hill DX3000 3KW audio amplifier here.
It has a topology/design like a class A/B but all the banks of output transistors (10 transistors in each...
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Forum: General Electronics Technical Discussion
03-25-2022, 08:13 AM
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Replies: 1
Views: 297
MPS NB691GG-Z pinout or datasheet?
Hi guys does anyone have an info on this part? It's a buck controller
NB691GG-Z
I tried looking for a datasheet but to no avail
Thanks
Rich
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Forum: BIOS Requests ONLY!
03-15-2022, 05:30 AM
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Replies: 5
Views: 169
Re: Lenovo Ideapad 305 Bios required
Thanks for the BIOS file, unfortunately it made no difference - the laptop still has the same symptoms. The battery charges OK, when I press the start button it goes green, I hear the fan and HDD...
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Forum: BIOS Requests ONLY!
03-14-2022, 10:48 AM
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Replies: 5
Views: 169
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Forum: BIOS Requests ONLY!
03-14-2022, 09:39 AM
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Replies: 5
Views: 169
Lenovo Ideapad 305-15IBD Bios required
Hi Guys
I have a Lenovo Ideapad 305 laptop here
Long story short - it was brought to me by another alleged repair company. It would not switch on but it would charge the baterry - I fixed this...
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Forum: Troubleshooting Audio Equipment
02-22-2022, 10:38 AM
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Replies: 4
Views: 364
Re: Denon AVR-X500 No audio output
I messed about with the options to hold down various buttons and press power - and after trying a few combinations it started to work
But I have no idea exactly which combo fixed it but I think it...
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Forum: Troubleshooting Audio Equipment
02-22-2022, 10:11 AM
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Replies: 4
Views: 364
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Forum: Troubleshooting Audio Equipment
02-22-2022, 08:36 AM
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Replies: 4
Views: 364
Denon AVR-X500 No audio output
Hi guys, I have this AVR-X500. It has no audio output but if I select some input (DVD) and connect an audio signal to the RCA DVD inputs, I hear a relay click and sometimes there is a slight...
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Forum: BIOS & Schematic Requests!
02-22-2022, 04:28 AM
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Replies: 1
Views: 547
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Forum: General Electronics Technical Discussion
02-15-2022, 05:06 PM
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Replies: 55
Views: 5,503
Re: Reballing discussion and tips
Why do you have all that tin foil on the board? When I use my BGA rework station it never desolders (as in moves) anything nearby, it just removes the intended part, and I don't put anything on...
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Forum: General Electronics Technical Discussion
02-15-2022, 09:36 AM
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Replies: 3
Views: 393
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Forum: General Electronics Technical Discussion
02-15-2022, 07:23 AM
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Replies: 3
Views: 393
SMD code ADSH & F1FD sot23-5 identify?
Hi guys
These devices are in some MAG250 IPTV boxes near the power input
I have several faulty ones but they are not all identical
On several I have an SOT23-5 device marked ADSH. Working...
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Forum: Equipment Usage, Soldering, Techniques, and Reviews
02-04-2022, 06:04 AM
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Replies: 13
Views: 1,266
Re: CH341 Programmer - any good for 1.8V?
Actually no I didn't - this is the actual kit I ordered
https://www.aliexpress.com/item/1005003055573566.html?spm=a2g0o.9042311.0.0.5e6f4c4dHTiL4B
It was cheap, and because I am in the Canary...
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