20 Most Recent Lexar JumpDrive S23 32GB USB 3.0 Flash Drive LJDS23-32GASBNA Green - Page 7 Questions & Answers

Tip

TIP: Brief guide to visual electronic fault-finding:


First, IS the appliance plugged in?
IS it switched on?
If YES to above, disconnect ALL power and visually check PCB components for obvious damage or shorts:

PCB: is the Printed Circuit Board burnt?
This indicates that a nearby component has overheated, possibly due to a short-circuit or overload.

PCB traces: are any traces (copper tracks) damaged / blown open?
Traces, the thin copper track 'wires' of the board, can be damaged by shorts / overload / overvoltage or rough handling of component.

Capacitors: are any caps bulging at top more than others, leaking from ends?
This indicates a failed capacitor.
Renew with exact same Farads value and minimum working voltage rating.

Resistors: are any burnt or blown (discolored, holes/ gaps on body)?
Resistors can work as voltage dividers, current limiters, feedback devices or in filters.
All have either screen-printed Ohms values or color-band coding of same.
As the connected 'parallel' circuit can affect a resistance reading, unsolder one leg only then test ohms.

Semiconductors:
Transistors and IC's: Although usually not visible damage, these can fail internally.
They perform many functions, including amplification signal generation and switching.
A very hot transistor / Integrated Circuit "chip" may spell trouble, as heat from overdriving / overloading / shorts may cause the internal junction to fail.
Some are electro-static discharge (ESD) sensitive.
Always renew with same component or, in some cases, an equivalent device may work.

Fuse: As most people are aware, a fuse protects the connected circuit (load) from overload, or over-current in case of shorts, too many devices, etc.
When current limit (Amps) is exceeded, the fuse blows, disconnecting the supply.
A blown glass fuse may have black soot-marks, or loose / blown fuse wire 'floating'.
Besides glass cartridge fuses, there are also resttable PTC types, which look like a disc capacitor, but usually blue.
PTC's open when overloaded, and may take a long time to reset themself, (if at all).

Dirty / oxidized connectors or pads:
May cause erratic and intermittent failures, where signal does not pass through.
Common on "pad" type connectors, as with a ribbon-type 'data' belts used for displays, keypads, etc.
Tactile buttons, common on keyboards, keypads and remote controllers, are also prone to contamination.
Molex plugs & IDC header pins can also become oxidized.
Usually, a wipe with a soft cloth or pencil eraser does the trick.
Surgical spirits or Servisol (contact cleaner) can remove oils / oxidization.

Bent pins: IC's and header connectors may have a broken or bent pin, rendering that pin non-functional.
Pull connector plug out in a straight direction, without twisting, then check all pins are good, before re-inserting any connectors.
Some connectors use a hook / catch system to ensure firm grip.
A small screwdriver, thumbnail or squeeze can unhook the various types.

Rectifier Diodes: usually in the power supply section, maybe individual diodes or a bridge rectifier, (with 4 internal diodes).
This converts AC voltage to DC.
Failure of any diode will disable the appliance.

Potentiometer: is the knob loose, crackling or erratic when touched / moved?
What people sometimes call a 'volume knob', the 'Pot' is actually a variable resistor, consisting of a resistance track, usually carbon, with a center wiper contact.
Often wired as a 'potential divider', the (common) wiper adjusts the resistance inversely between 2 outer terminals.
For example, the wiper may be signal in, the 'minimum' terminal grounded, and 'maximum' terminal out to amplifier.
If wiper or track are worn, signal can be temporarily lost.

LED: is your indication / display LED not working?
Outline of an LED:
As a Light Emitting Diode is polarized, the voltage to it must never be reversed.
This is why the negative cathode has a flat spot on the flange, and positive anode is bevelled.
The current must not exceed the forward current 'If' and voltage through diode must not exceed forward voltage 'Vf' rating.
That is why most LED's have a small 'current-limiting' resistor in series, connected to one of the legs.
A quick & simple single-color LED test using a single 1.5 volt cell and 2 thin insulated wires:
As LED Vf usually begins at 2V-2.2V, we can safely use a singe 1.5V cell without a resistor.
Hold negative wire to cathode side, either on the LED or soldered point on same track.
Briefly touch the positive wire to the anode side, watching for a flash or glow.
Some 2-3 lead LED's may be bi-color, tri-color, or the 4-lead RGB type.
Others may use a higher operating Vf, such as 3V for U/B or 8-12VDC for 'Jumbo' LED's.

Infra-Red Remote LED's: Remote or motor-gate beam suspect? Not sure if working?
Humans are unable to see Infra-Red wavelengths.
The image sensors of most digital cameras, webcams, security cameras, cellphones are sensitive to the IR radiation emitted by the IR-LED at front.
Point your remote at one of these, and watch screen for whitish-purple flashes / pulses of light from the LED.
The pulses are modulated digital data being sent from remote, or for a broken-beam detector, just 'active'.
Also check batteries, and for universals, that pairing is correctly done.
Thassall!! :)

on Jul 15, 2018 | Electronics - Others


Check the power supply look for anything that might be burnt or damaged.

Electronics -... | Answered on Jul 08, 2018


Manualslib.com might possibly have the manual, if your'e lucky.
Visit their site and type your model in the search box.

Electronics -... | Answered on Jul 05, 2018


Take it in to a Multichoice / DSTV agent with all the documentation for a checkup.
If your'e lucky, they will replace it if faulty.

Electronics -... | Answered on Jul 05, 2018


[D]unno.
Need more details please.

Electronics -... | Answered on Jul 05, 2018


Not sure about your specific model, but on mine, you press the card in slightly (thumbnail works), then move the card's edge into the slot opening and release pressure, allowing card to be pulled out.
The card on my dash-cam pushes in, then hooks under a lip next to the slot.

Electronics -... | Answered on Jul 05, 2018


Hi, I came across this website www.reliable-store.com

for complete details on wiring diagrams, repair, service, maintenance, engine, error/fault codes, instruction on removal, assembly, installation etc. along with info on engine, torque spec s, PC, etc a lot more

Electronics -... | Answered on Jul 03, 2018


There are micro SD readers for sale retail and on the internet that you could use to read it on a computer.

Electronics -... | Answered on Jun 14, 2018


That unit supplies 880 watts of charging power for 24 volts. In the event that there is a larger draw on the current, it would be limited. However the unit is not supplying the whole load so it would be fine.

Electronics -... | Answered on Jun 05, 2018


Look for components that are attached to heat sinks for a starting point . Heat sinks are big chunks of metal that absorb heat from components that generate heat . Power regulator components maybe a possible source of heat. Check their temperature while unit is running .

Electronics -... | Answered on Jun 04, 2018


You would select the files and then copy them to the USB drive.

Electronics -... | Answered on May 21, 2018


Instructions included with purchase.

Perhaps contact seller, and offer to purchase only a photocopy or scanned digital copy of the instructions.

https://www.ebay.com/itm/NEW-3022-EQUUS-PROFESSIONAL-7-FUNCTION-INDUCTIVE-ANALYZER-/331546375718


NEW 3022 EQUUS PROFESSIONAL 7 FUNCTION INDUCTIVE ANALYZER eBay

Electronics -... | Answered on Apr 25, 2018


hi! can u help me? i bought usb flash drive yesterday hp 8gb and it's properly working, when i create bootable usb im in diskpart in command promp and my computer got freeze not responding, im in a computer shop that's why i remove my usb flash drive and just went home. when i plug the usb it says a problem occured during hardware installation. i know there is the connection about diskparting the usb yesterday. i troubleshoot my usb flash. i go to device management and uninstall the usb drive and scan plug and play, but its not working it always show the yellow mark. even i update the driver its not working. what should i do? i hope u can help me :( here is my email just incase u have a solution for me. [email protected] Thank you very much!

Electronics -... | Answered on Apr 04, 2018


There are a few options out there but it also depends on your skill level with electronics.You will need a "Battery Backup Unit" that can run your garage door when power is out.
Here is an automatic door closer with time delay.

THCU Gate and Garage Door Universal Solid State Timer

Electronics -... | Answered on Apr 03, 2018


I suffer from hearing loss badly. I've had three different Sennheiser headphones over the years so I can listen to the TV at a level good for me without it blasting for the rest of the House. The ones I have currently are HDR 170 they are AWESOME! Can adjust bass treble as well as volume up and down but they are very comfortable over the ear headphones. Their best feature is the way they sound. Man you won't be disappointed especially listening to music through these. They're great! Cordless, rechargeable, long playing too. I get about a good 12 hrs out of a chargecould get more but want them for the night. Hope this helped. Go to a store that sells them if you can maybe Best Buy etc. try em out. Then shop for cheapest price as they're not cheap.

Electronics -... | Answered on Apr 02, 2018


you can remove the right protection from the computer you use to create the right protection, if you want to use diferend computer that's impossible but same you can go to start and type CMD the comand prompt once the (CMD) folder will open, type (discpart) another (CMD) folder will open type list disc that is going to highlight all the disc on your computer or laptop, now type select disc and exact number of the flash drive if it's 1 2 or3 and hit enter it will select exact number with the flash drive, now attribute clear readonly and enter, now it will says attribute successfully, now type exit to see changes remove the flash drive and plug it back done

Electronics -... | Answered on Mar 29, 2018


you can remove the right protection from the computer you use to create the right protection, if you want to use diferend computer that's impossible but same you can go to start and type CMD the comand prompt once the (CMD) folder will open, type (discpart) another (CMD) folder will open type list disc that is going to highlight all the disc on your computer or laptop, now type select disc and exact number of the flash drive if it's 1 2 or3 and hit enter it will select exact number with the flash drive, now attribute clear readonly and enter, now it will says attribute successfully, now type exit to see changes remove the flash drive and plug it back done

Electronics -... | Answered on Mar 29, 2018


USA and Japan

Electronics -... | Answered on Mar 29, 2018

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