View allAll Photos Tagged Troubleshooting
Top trace is voltage at the output terminals on the front panel. Bottom trace is voltage at the input to the buffer output stage (wiper of pot R22 on the schematic)
schematic: www.nostalgickitscentral.com/eico/schematics/eico_schemat...
I tend to think the 6K6 output pentode tube is faulty, since it's receiving a nice clean signal at the input, but it's outputting garbage. It's either that or the coupling cap C-15.
Both traces have been AC coupled at the scope. The 5V/div range on the bottom trace is wrong -- it's actually 50V/div, but the Tek scope doesn't recognize the HP probe as a 10x type because it doesn't have the bayonet pin indicator.
blog post: www.johngineer.com/blog/?p=1193
Pawnee Station is a coal-fired, steam-electric generating station. Pawnee has a comprehensive control system that enables reliable operations and state-of-the-art diagnostic troubleshooting. Also located on Pawnee Station property is the Manchief Power Plant, a 250 MW gas-fired combustion turbine plant. Manchief is owned by Capital Power Income LP. Xcel Energy purchases the electric output of Manchief.
www.xcelenergy.com/Energy_Portfolio/Electricity/Pawnee_Ge...
Top trace is voltage at the output terminals on the front panel. Bottom trace is voltage at the input to the buffer output stage (wiper of pot R22 on the schematic)
schematic: www.nostalgickitscentral.com/eico/schematics/eico_schemat...
I tend to think the 6K6 output pentode tube is faulty, since it's receiving a nice clean signal at the input, but it's outputting garbage. It's either that or the coupling cap C-15.
Both traces have been AC coupled at the scope. The 5V/div range on the bottom trace is wrong -- it's actually 50V/div, but the Tek scope doesn't recognize the HP probe as a 10x type because it doesn't have the bayonet pin indicator.
blog post: www.johngineer.com/blog/?p=1193
Call Center at Huawei Global Headquarters in Shenzhen, responsible for round-the-clock monitoring and real-time troubleshooting of Huawei's IT operations.
Need to Reset PMU? The iMac was a dramatic departure from mainstream computer design. The design of the first generation of the iMac has been credited to Jonathan Ive, currently Vice President of Industrial Design at Apple. It was the first computer to ship with out a floppy drive and was equip exclusively with USB port standard. The slot-loading iMac G3 began shipping in late 1999 with additional DV (Digital Video) designation. This version had FireWire, CD-RW/DVD-ROM, 500 Mhz Processor atop the new "Pangea" motherboard with a 16MB ATI Rage 128 Ultra graphics chip. The 2001 series was available in indigo, graphite, and snow with either the 500, 600, or 700MHz (PPC750CXe) processor.
Resetting G3 PMU ? Check out Mac Users Guide for more how-to information. Based on the Yosemite architecture featuring a 450 MHz PowerPC 750 G3 processor the Apple Power Macintosh G3 (Blue & White) has 1 MB of backside cache, arrives with 128 MB of RAM, a 32X CD-ROM drive and an ATI Rage 128 GL graphics card. This was the first design that utilized the “fold down door” enclosure that revolutionized the way we interact with our Mac desktops. It is extremely easy to upgrade and introduced Firewire and included both USB and ADB port connectors.
Resetting G3 PMU ? Check out Mac Users Guide for more how-to information. Based on the Yosemite architecture featuring a 450 MHz PowerPC 750 G3 processor the Apple Power Macintosh G3 (Blue & White) has 1 MB of backside cache, arrives with 128 MB of RAM, a 32X CD-ROM drive and an ATI Rage 128 GL graphics card. This was the first design that utilized the “fold down door” enclosure that revolutionized the way we interact with our Mac desktops. It is extremely easy to upgrade and introduced Firewire and included both USB and ADB port connectors.
A first attempt at astrophotography. This is a stack of ~15 min worth of images shot with a D850 and Nikkor 70-200/4 + 1.4TC. Mounted on a Sky Watcher brand tracking mount.
Mostly just trying to get a feel for the process and to learn the tools. Certainly more to go on both fronts, but I'm happy with this first image.
Also, troubleshooting hardware in the dark in 28 degree weather is... interesting! :-)
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** Copyright for this photo belongs solely to Ian-Janne Matt Images may not be copied, downloaded, or used in any way without the expressed, written permission of the photographer. ( RM-Rights managed only)
The other kind of visual glitch I've been getting. Oh poor little computer, maybe I work her too hard?
MacBook Air model A1237 from 2008 with an expanding battery (A1245) and the Applecare date has passed. This MBA would not sit straight on a table and you could see the lid askew. Due to the expanding battery other parts of the MBA were pushed out. It still works, but it doesn't look nice. I've requested a quote for a new battery.
Resetting G4 PMU? Check out Mac Users Guide for more how-to information. The PowerMac G4 (Mirrored Drive Doors) features dual 1.0 GHz PowerPC (G4) processors each with an AltiVec velocity engine, 256k cache, and 1 MB of DDR SRAM backside cache. It shipped configured with 256 MB of RAM upgradeable to 2 GB, 2X DVD-R/CD-RW "SuperDrive", 4X AGP ATI Radeon 9000 Pro graphics card with 64 MB of DDR SDRAM and an available AirPort (802.11b). One of the last versions shipping with Mac OS X 10.4.11 "Tiger" capable of booting into Mac OS 9 and using Mac OS 9 applications within the Mac OS X "Classic" environment.
Resetting G4 PMU? Check out Mac Users Guide for more how-to information. The PowerMac G4 (Mirrored Drive Doors) features dual 1.0 GHz PowerPC (G4) processors each with an AltiVec velocity engine, 256k cache, and 1 MB of DDR SRAM backside cache. It shipped configured with 256 MB of RAM upgradeable to 2 GB, 2X DVD-R/CD-RW "SuperDrive", 4X AGP ATI Radeon 9000 Pro graphics card with 64 MB of DDR SDRAM and an available AirPort (802.11b). One of the last versions shipping with Mac OS X 10.4.11 "Tiger" capable of booting into Mac OS 9 and using Mac OS 9 applications within the Mac OS X "Classic" environment.
Resetting G4 PMU? Check out Mac Users Guide for more how-to information. Based on the Power Macintosh G3 (Blue & White) case design the PowerMac G4 677. This version of the PowerMac G4 differed from its predecessors not only in its processor but that it offered Digitial Audio and shipped with the first version to the DVD-R/CD-RW “SuperDrive”. Equipped with a 677 Mhz PowerPC processor with a AltiVec velocity vector processing unit, 256k level 2 cache, and 1 MB of backside cache. It shipped with 256 MB of RAM, expandable to 1GB, a 4x AGP NVIDA GeForce 2 MX graphics card with 32 MB of SDRAM, and available with AirPort (802.11b).
The LRV-92 is seen mid-train with a mid-day run to Roseville, CA. Seen here, they are crawling past MP96.3 after the intermediate signal dropped on them about 5 car lengths away. Signal Maintainer Cliff is nearby already troubleshooting the issue.
©FranksRails Photography, LLC.
DATE: 6-25-14
LOCATION: Bldg 9NW - POGO
SUBJECT: Expedition 42/43 ESA astronaut Samantha Cristoforetti during ISS EVA POGO 2 training with instructor Sandy Moore.
PHOTOGRAPHER: Lauren Harnett
Verónica Vergara Larrea isn’t new to troubleshooting, but a task as big as a supercomputer takes a plan and a team. Her team just completed acceptance of approximately 25 percent of the final system.
The Faces of Summit series shares stories of people working to stand up America’s next top supercomputer for open science, the Oak Ridge Leadership Computing Facility’s Summit. The next-generation machine is scheduled to come on line in 2018.
Read more: www.olcf.ornl.gov/2018/01/17/faces-of-summit-putting-the-...
Image credit: Jason Richards/ORNL
Verónica Vergara Larrea isn’t new to troubleshooting, but a task as big as a supercomputer takes a plan and a team. Her team just completed acceptance of approximately 25 percent of the final system.
The Faces of Summit series shares stories of people working to stand up America’s next top supercomputer for open science, the Oak Ridge Leadership Computing Facility’s Summit. The next-generation machine is scheduled to come on line in 2018.
Read more: www.olcf.ornl.gov/2018/01/17/faces-of-summit-putting-the-...
Image credit: Jason Richards/ORNL
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www.myseelectric.com/ (714) 448-6252 S.E. Electric is a Electrician in Westminster, CA that specializes in Electrical Troubleshooting, Electrical Repair, Electric Upgrade, Electrical Services. #Electrical #Troubleshooting Click here now for a free consultation www.myseelectric.com/contact.htm Link to this video on Youtube www.youtube.com/watch?v=v65ywbUQMpw&feature=youtu.be
Students gain knowledge and experience in assembling electronics, 3D modeling, troubleshooting, and other valuable tools in 3D Printing 101.
Photo by Yvonne Gay
This video podcast focuses on how to upgrade a PowerMac G5 2.0 GHz Dual Processor hard drive featuring step-by-step instructions on how to open, remove, re-install the hard drive and how to put things back together again.
MARINE CORPS AIR STATION YUMA, Ariz. – Marines serving with Scout Sniper Platoon, 1st Battalion, 7th Marine Regiment, engage targets while laying down behind rocks as their partners spot the rounds impacts during Weapons Tactics Instructors course here, Sept. 28, 2013. The platoon conducted numerous exercises to include immediate medical aid, photography taking, radio troubleshooting and combat marksmanship training during Sept. 25 through 28.
ISS033-E-017337 (1 Nov. 2012) --- NASA astronaut Sunita Williams, Expedition 33 commander, participates in a session of extravehicular activity (EVA) outside the International Space Station on Nov. 1, 2012. During the six-hour, 38-minute spacewalk, Williams and Japan Aerospace Exploration Agency astronaut Aki Hoshide (out of frame), flight engineer, ventured outside the orbital outpost to perform work and to support ground-based troubleshooting of an ammonia leak.
The problem with troubleshooting is that trouble shoots back...
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The Apple portable media player, iPod sixth generation, was introduced in September 2008 with the “Classic” suffix the received a new interface design and an anodized aluminum front plate. The hardware and the firmware were updated with a 120GB model, replacing a previous 80GB model and the 160GB model was later discontinued. The one depicted is a 160GB model.
Many of my tomato plants are showing some red coloring on the bottom of their leaves and in the stalks. I've been reading that this indicates a phosphorous deficiency. I planned all along to add rock phosphate to my garden (to give the plants phosphorous). I had figured that the compost in the soil I used for these plants would have enough nutrients until then. It seems that I am wrong, so I'm giving the plants a little liquid fertilizer now.
This is a personal side/weekend project: a work-in-progress remake of an old PC game I've been creating in-browser, and a general exercise in OO-JS design and performance testing.
This is a screenshot from an old WinXP laptop, also a good testing candidate: It's a 2006-era Fujitsu notebook, 1.2 GHz CPU, 512 MB of RAM and an Intel 915-series GMA graphics card.
Garbage Collection can interrupt your script execution, meaning jank and/or dropped frames and reduced performance in your web work - so it's helpful to reduce the amount of "garbage" you create in the first place.
In this case, there was an expensive loop within the collisionCheckArray() function with a lot of calls and many iterations and due to inefficient design, it was making a local copy of a {x, y, width, height}-like parameter object on each call so it could be modified without affecting the original object.
The copying resulted in a lot of temporary objects being created, contributing to nearly 20 MB of RAM being used overall before GC (or other de-allocation / memory freeing routines) kicked in and brought the levels back down.
As a quick test, simply shunting the collisionCheckArray() function via return: false; proved that it was one of the big contributors to memory use.
The screenshot above shows the memory graph over time while running the game, before and after the "shunt".
The proper fix involved storing the "extra" collision data on the object being passed into the function, eliminating the cloning and just passing by reference - which in retrospect, is now pretty obvious.
Victory over the Blue Sky charger! A simple fuse replacement after hours and hours of angst and troubleshooting.
Alaska brand liquid fertilizer that I bought at Lowes today. The fish emulsion is certified as organic. The Morbloom is not, but I found both under the "natural and organic" section, so I figured it was good enough. I gave each tomato plant about 8 ml of diluted Morbloom today.
Need to Reset PMU? The iMac was a dramatic departure from mainstream computer design. The design of the first generation of the iMac has been credited to Jonathan Ive, currently Vice President of Industrial Design at Apple. It was the first computer to ship with out a floppy drive and was equip exclusively with USB port standard. The slot-loading iMac G3 began shipping in late 1999 with additional DV (Digital Video) designation. This version had FireWire, CD-RW/DVD-ROM, 500 Mhz Processor atop the new "Pangea" motherboard with a 16MB ATI Rage 128 Ultra graphics chip. The 2001 series was available in indigo, graphite, and snow with either the 500, 600, or 700MHz (PPC750CXe) processor.
More tomato leaves with reddening; I'm pretty sure that this indicates a phosphorous deficiency. This is an Anna Russian tomato plant. Whenever it isn't happy, it goes all limp and falls over. It also has a bad case of red leaves. I hope the Morbloom fertilizer that I gave it will help. He is growing like crazy though. I've read in forums that Anna Russsian looks pretty lame most of the time but still gives off a good harvest. Time will tell.
Need to Reset PMU? The iMac was a dramatic departure from mainstream computer design. The design of the first generation of the iMac has been credited to Jonathan Ive, currently Vice President of Industrial Design at Apple. It was the first computer to ship with out a floppy drive and was equip exclusively with USB port standard. The slot-loading iMac G3 began shipping in late 1999 with additional DV (Digital Video) designation. This version had FireWire, CD-RW/DVD-ROM, 500 Mhz Processor atop the new "Pangea" motherboard with a 16MB ATI Rage 128 Ultra graphics chip. The 2001 series was available in indigo, graphite, and snow with either the 500, 600, or 700MHz (PPC750CXe) processor.