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Search: Posts Made By: japlytic
Forum: General Computer & Tech Discussion 08-10-2022, 11:30 PM
Replies: 3
Views: 131
Posted By japlytic
Motherboard diagnostic LED states

I've identified no more than 16 possible states for indication of motherboard diagnostic states which can be indicated with only 4 single colour LEDs which is:


No power applied (all off)
...
Forum: General Computer & Tech Discussion 07-13-2022, 09:05 PM
Replies: 3
Views: 644
Posted By japlytic
Re: Delta AC-106A (Dell P/N 00G8CN) DC-DC converter repurposing

I used a server PSU with a +12V output as an input with this output being switched along with the +3.3/+5V DC-DC converters.
Forum: General Computer & Tech Discussion 07-12-2022, 04:56 AM
Replies: 3
Views: 644
Posted By japlytic
Lightbulb Delta AC-106A (Dell P/N 00G8CN) DC-DC converter repurposing

This unit from a Dell PowerEdge R320/R420 has +3.3V/22A and +5V/22A DC-DC converters (one for each rail) which is a good candidate for conversion to a 12V input ATX PSU.
Diagrams of required...
Forum: Troubleshooting TVs and Video Sources 07-10-2022, 09:48 PM
Replies: 0
Views: 148
Posted By japlytic
Talking Certain DisplayPort-HDMI cables can disable HDMI CEC communication

With a setup including a TV and AV receiver where HDMI Consumer Electronics Control (CEC) and Audio Return Channel (ARC) functions were working, these two functions stopped working after changing...
Forum: General Computer & Tech Discussion 04-09-2022, 12:46 AM
Replies: 6
Views: 697
Posted By japlytic
TPM 2.0 is not always standard issue

A Gigabyte Z690 motherboard I have recently purchased had a connector for the TPM (Trusted Platform Module) but was not included as standard in the box even though Windows 11 (which requires it) has...
Forum: General Capacitor Questions & Issues 11-15-2021, 12:28 AM
Replies: 2
Views: 730
Posted By japlytic
Re: help to find Nippon Chemi-Con datasheet

According to the information you provided, this is a general purpose unit.
Forum: Equipment Usage, Soldering, Techniques, and Reviews 09-04-2021, 04:03 AM
Replies: 5
Views: 2,224
Posted By japlytic
Re: Test equipment and 1PPS inputs

Although not a piece of test equipment (but a piece of digital communications equipment), a Tandberg MT5600 DVB-T modulator can have the internal reference oscillator disciplined by a 1PPS input.
Forum: Troubleshooting Power Supplies and Power Supply Design 08-29-2021, 06:07 AM
Replies: 0
Views: 510
Posted By japlytic
HEP Group LBVC9BI UNI LED driver

This unit had approximately 50K running hours before it failed; upon opening, a bulging (and heat stressed) TK UTWHM series 450V 10uF unit caused the TOP278 IC to blow its top off.
Other...
Forum: General Electronics Technical Discussion 07-14-2021, 10:09 PM
Replies: 1
Views: 1,408
Posted By japlytic
Talking Non-standard use of HDMI connectors

Two examples of such I have seen were on the logic analyser (SBUS) connector on a Siglent SDS1104X-E and the analog AV input on an AVerMedia H727.
Do you know of any other examples?
Forum: Troubleshooting Power Supplies and Power Supply Design 05-13-2021, 11:47 PM
Replies: 3,195
Views: 1,079,633
Posted By japlytic
Re: Power supply build quality pictorial. part 2

Cooler Master V1200 (80 Plus Platinum certified)

Main board:
330uF 420V x2 + 390uF 420V primary filter (all Nichicon GG)
330uF 16V x6 Nichicon FPCAP before all +12V output inductors with 1000uF...
Forum: Troubleshooting TVs and Video Sources 05-11-2021, 12:38 AM
Replies: 0
Views: 360
Posted By japlytic
Pioneer VSX-932 picky with non-CEA video formats

When I was trying to route a HTPC through a Pioneer VSX-932 AV receiver via HDMI to a TV via HDMI (so that I can get surround sound from the HTPC which supports it), the AV receiver (which overlays...
Forum: Troubleshooting Game Consoles & Other Weird Devices 03-15-2021, 03:14 AM
Replies: 4
Views: 956
Posted By japlytic
Re: Generic in-dash navigation system AAOGP300194/365125

This was enough info for me to power up this unit - the boot screen is "Opal" and the home screen has the Volkswagen logo; the navigation software is NaviOne with the OS being PRIMA-v1.53 (the unit...
Forum: Troubleshooting Game Consoles & Other Weird Devices 03-13-2021, 07:39 PM
Replies: 4
Views: 956
Posted By japlytic
Question Generic in-dash navigation system AAOGP300194/365125

This unit runs on Windows Embedded CE 6.0 Core, and I am looking for pinouts of each connector.
Forum: General Computer & Tech Discussion 01-18-2021, 09:27 PM
Replies: 0
Views: 932
Posted By japlytic
Talking Laser printer firing rates

Some time ago, I came across the Integrated Circuit Systems June 1995 Data Book and found something interesting, which was the ICS1574 User Programmable Laser Engine Pixel Clock Generator which can...
Forum: General Computer & Tech Discussion 01-05-2021, 06:40 PM
Replies: 7
Views: 1,706
Posted By japlytic
Re: Psuedo-4K LCD panels

Here is a test pattern to tell if a 4K panel has actual 4K resolution:
Forum: Troubleshooting Power Supplies and Power Supply Design 01-02-2021, 06:36 PM
Replies: 1
Views: 598
Posted By japlytic
Mains inverter build quality pictorial

Calibre 240V/1000W Pure Sinewave Inverter (12V input)

On each of the output transformers at the primary side:
2x HRF3205 MOSFETs on each side of the centre tap
2200uF 16V x2
30A fuse x2

On...
Forum: General Computer & Tech Discussion 12-31-2020, 06:15 PM
Replies: 7
Views: 1,706
Posted By japlytic
Angry Psuedo-4K LCD panels

I have come across (and was burned by at least one) so called "4K" (claiming 3840 * 2160) LCD panels which have an actual resolution of Full HD (1920 * 1080) meaning that every second pixel in either...
Forum: Troubleshooting Game Consoles & Other Weird Devices 12-07-2020, 12:19 AM
Replies: 22
Views: 2,421
Posted By japlytic
Re: Nintendo Wii power supply

With regard to the particular brand of capacitor, is this a low cost compatible unit?
Forum: General Electronics Technical Discussion 11-29-2020, 01:14 AM
Replies: 3
Views: 1,000
Posted By japlytic
Re: Repurposing an IPAD Air 2 any ideas feedback wanted not wanting to recycle

For some time, notebooks/tablets/all-in-one PCs have used LCD panels with an Embedded DisplayPort (eDP) interface which typically has a standardized pinout except for manufacturer use pins which are...
Forum: General Computer & Tech Discussion 11-16-2020, 07:26 PM
Replies: 3
Views: 1,105
Posted By japlytic
Lightbulb .dlna domain names

I did a search for the .dlna domain and discovered that it is not in current use, but I think such a domain should be able to be used on local DLNA servers with an easy to use name you enter into...
Forum: Troubleshooting Power Supplies and Power Supply Design 11-07-2020, 06:48 PM
Replies: 2
Views: 851
Posted By japlytic
Talking Mains inverters with 55 Hz output frequency

On a generic box for a mains inverter I purchased, it had check boxes for the usual 50/60 Hz with an additional check box for 55 Hz - why would that particular frequency be offered at all?
Forum: Troubleshooting Power Supplies and Power Supply Design 11-02-2020, 11:23 PM
Replies: 3
Views: 1,109
Posted By japlytic
What do you repurpose server PSUs for?

So far, I have repurposed server PSUs (all hot swap) for the following:

Portable multi-purpose test set with dual channel variable PSU
Variable frequency/voltage electrically isolated pure...
Forum: Troubleshooting Power Supplies and Power Supply Design 10-31-2020, 04:51 AM
Replies: 0
Views: 720
Posted By japlytic
MOSFET ratings for UPS inverter applications

I did some analysis of the ratings of the output MOSFETs in UPS inverters with a conventional output transformer (modified and pure sinewave, centre tapped and H bridge, 12V/24V/48V) and I have come...
Forum: Equipment Usage, Soldering, Techniques, and Reviews 10-01-2020, 11:30 PM
Replies: 17
Views: 2,360
Posted By japlytic
Re: Soldering a DVI connector on a VGA-only motherboard.

Even though there may be traces on the DVI portion of the connector and even if the chipset supports it, the DVI interface on the controller may have been disabled under customization of the BIOS.
Forum: General Computer & Tech Discussion 08-30-2020, 12:50 AM
Replies: 36
Views: 4,273
Posted By japlytic
Re: Intel introduces ATX12VO spec eliminating 3.3 and 5v

I was expecting something like this would happen - we could be using server PSUs which typically have a single high output +12V rail (in a Delta DPS-1200 excluding protrustions, it has a power...
Showing results 1 to 25 of 500

 
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