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How to use Samsung Gear Fit 2 with devices that have less than 1.5GB of RAM

12/05/201709/12/2019 Simon 222 Comments

Issue

When you try to connect your Samsung Gear Fit 2 sports band to a smartphone that has less than 1.5GB of RAM for the first time, you are in for a nasty surprise; although you can find and install Galaxy Wearable application from Google Play store onto your device, it will be unable to successfully connect your smartphone and the Gear Fit 2.

Galaxy Wearable app doesn't find Gear Fit 2 — Galaxy Wearable app doesn’t find Gear Fit 2

If you try to connect your Gear Fit 2 to your device manually, that is directly from phone’s bluetooth settings, the phone is able to find Gear Fit 2 and even initiates the pairing process together with the “Confirm passkey xxxxxx to pair with Gear Fit 2.” message. After you confirm the bluetooth pairing request, a “setting up…” text is displayed on your Gear Fit 2 watch but the process doesn’t succeed. The connecting process between the smartphone and Gear Fit 2 needs to be performed from within the Galaxy Wearable app in order to be successfully completed.

The reason why Galaxy Wearable app is unable to find and pair the Gear Fit 2 with devices that have less than 1.5GB of RAM is the Galaxy Wearable app itself; the developers at Samsung enforced a minimum RAM requirement check into the app. When Galaxy Wearable app is run on the devices that have less than 1.5GB of RAM, it is only able to find and pair with Samsung accessories such as Gear Triathlon S/M, Gear IconX R/L and Gear Circle but not the Gear Fit 2.

Why did developers at Samsung impose such a limit is beyond my knowledge, since I am able to successfully connect and use Gear Fit 2 with Sony Xperia T3 smartphone (Android 4.4.4, 1GB RAM) by utilising a modified Galaxy Wearable app (I have removed the minimum RAM requirement check from the app). I have contacted Samsung on this matter, but up until this moment, I am still waiting for a more technical response, in comparison to the generic one I received, that can be seen below:
“…In order to proper functionality the Gear Fit 2 with all the purpose it was manufactured for, there are some set of requirement standards set for any phone/ Gear watch. For efficient performance the phone needs particular requirements…”
I suspect the reason for their decision is they have encountered some performance issues on some of less capable smartphones during the testing phase and decided to drop support for the mentioned devices altogether to prevent potential complaints from customers.

Samsung Gear Fit 2 minimum of 1.5GB RAM requirement

JBL Charge 2+ Plus Repair Service – Charging Connector Micro-USB Port – Socket Replacement

10/05/201730/05/2020 Simon 1 Comment

Issue

– JBL Charge 2+ Plus doesn’t respond or show any signs of life when charging connector is inserted (charging indication LEDs are not flashing)
– JBL Charge 2+ Plus charges battery only if charging connector is inserted from a specific angle
– JBL Charge 2+ Plus charges battery temporarily if charging connector is wiggled from side to side or up and down
– Micro-USB port on the JBL Charge 2+ Plus feels loose or looks damaged

We offer repair service for JBL Charge 2+ Plus – Charging Connector Micro-USB Port – Socket replacement. Comes with a 180 day warranty.

JBL Charge 2+ Plus Charging Micro-USB Port repair / replacement service

JBL Charge Repair Service – Charging Connector Micro-USB Port – Socket Replacement

10/05/201730/05/2020 Simon 2 Comments

Issue

– JBL Charge doesn’t respond or show any signs of life when charging connector is inserted (charging indication LEDs are not flashing)
– JBL Charge charges battery only if charging connector is inserted from a specific angle
– JBL Charge charges battery temporarily if charging connector is wiggled from side to side or up and down
– Micro-USB port on the JBL Charge feels loose or looks damaged

We offer repair service for JBL Charge – Charging Connector Micro-USB Port – Socket replacement. Comes with a 180 day warranty.

JBL Charge Faulty Charging Micro-USB Port repair or replacement service

JBL Flip 3 Repair Service – Charging Connector Micro-USB Port – Socket Replacement

06/03/201730/05/2020 Simon 5 Comments

Issue

– JBL Flip 3 doesn’t respond or show any signs of life when charging connector is inserted (charging indication LEDs are not flashing)
– JBL Flip 3 charges battery only if charging connector is inserted from a specific angle
– JBL Flip 3 charges battery temporarily if charging connector is wiggled from side to side or up and down
– Micro-USB port on the JBL Flip 3 feels loose or looks damaged

We offer repair service for JBL Flip 3 – Charging Connector Micro-USB Port – Socket replacement. Comes with a 180 day warranty.

JBL Flip 3 Charging Micro-USB Port repair service

Do-It-Yourself PACE Instant-SetBack Cubby – Simple LED Light Sensor Switch Circuit

23/11/201608/11/2019 Simon 5 Comments

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Issue

Some of the work I do, such as soldering components with large thermal mass on multi-layer boards, requires the use of a high-powered, temperature controlled soldering station with fast thermal recovery and lead-free soldering capability. An under-powered 35W soldering station I already own, just isn’t suitable for that type of work. So, I treated myself with a PACE ST-50 80W Digital Soldering Station which came with a composite / cartridge type soldering iron and a standard tool stand. Since the heater element and thermal sensor have been integrated into the soldering iron tip, the thermal transfer is excellent and overshoot is eliminated. The build quality of this station is exceptional.

PACE also offers a smart tool stand that is capable of detecting the presence of the soldering iron. It is called an ISB or Instant-SetBack Cubby (Part #: 6019-0084-P1) and it costs around 100 USD. When the ISB Cubby detects the presence of the TD-100 soldering iron, it waits for 45 seconds and then puts the iron into the temperature Setback mode. Setback Mode means that the temperature is reduced to just below solder melt temperature (176°C/350°F) so the corrosive action of the leaded or Lead-Free solder is stopped, maximizing the life of the tip and minimizing the electricity bill. When the iron is removed from the cubby, the system returns to normal operation within seconds. The mentioned cubby is suitable for ST 30, ST 50, ST 65, ST 70, ST 75, ST 115, WJS 100, MBT 301 & MBT 350 units.

Since ISB Cubby Mini-DIN-3 port has been present on the back side of my unit, I did some research on the soldering iron detection mechanism. I came up with a simple, but reliable do-it-yourself, minimal component and low cost solution. All the information required was provided in this thread on the eevblog.com. I was reluctant to use a simple mechanical switch due to the reliability issues; the iron handle is too light to surely activate the switch every time, moreover switch shorting or burn could occur in the harsh, high-temperature and solder spatter contaminated environment. I couldn’t use an infrared activated switch solution since I didn’t have an IR photo-transistor or an IR LED on hand. However, I could easily find an ordinary white LED diode, a photoresistor (or light-dependent resistor, LDR, or photocell; light-controlled variable resistor), NPN transistor (or bipolar junction transistor, BJT for short), 500K potentiometer (or pot, variable resistor, rheostat) and a Mini-DIN-3 connector cable (a modified Mini-DIN-4, Mini-DIN-7 or S Video Cable can also be used). These are all the parts that are needed for this simple light-activated switch / soldering iron detection circuit.

Working principle of the DIY PACE Instant-Setback Cubby. Works by utilizing light-activated switch.

JBL Flip 2 Repair Service – Charging Connector Micro-USB Port – Socket Replacement

09/10/201630/05/2020 Simon 3 Comments

Issue

– JBL Flip 2 doesn’t respond or show any signs of life when charging connector is inserted (charging indication LEDs are not flashing)
– JBL Flip 2 charges battery only if charging connector is inserted from a specific angle
– JBL Flip 2 charges battery temporarily if charging connector is wiggled from side to side or up and down
– Micro-USB port on the JBL Flip 2 feels loose or looks damaged

We offer repair service for JBL Flip 2 – Charging Connector Micro-USB Port – Socket replacement. Comes with a 180 day warranty.

JBL Flip 2 Faulty Charging Micro-USB Port repair or replacement service

How to distinguish fake / cloned HP laptop AC charging power adapter from the original / genuine one

15/09/201608/11/2019 Simon 10 Comments

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Issue

In this tutorial I will write about how to recognize a fake, copied or cloned HP laptop AC charging power adapter. I believe this is an important subject since low quality Chinese knock-off copies of HP power adapters can potentially overheat or malfunction and present a serious fire hazard. They are usually made from low quality materials, internal circuitry is simple and lacks proper safeguards (over-current, over-temperature and short circuit protection), any kind of product quality control seems non-existent. Power ratings on these things are made up out of thin air since these adapters are not capable of providing near the advertised power. Do not let the appearance of the adapter or even the HP logo on the sticker deceive you, these things are easiest to copy by the counterfeiters, but as you will see; the devil is in the details.

Tools required:

Analog or digital kitchen scale
DMM / Digital multimeter / voltmeter (Optional, only required for last step)

fake HP 90W power adapter — Fake HP 90W power adapter close up. Please ignore the custom warning sticker.

GPS Dropping Losing Signal Issues with Sport Tracking Apps like Endomondo on Android Lollipop and Marshmallow

29/08/201616/05/2017 Simon Leave a comment

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Issue

Endomondo or similar Sport tracker applications randomly losing – dropping GPS signal during the workout, when used on Android 5.x Lollipop or 6.x Marshmallow with the screen turned off. Sometimes Endomondo app uses all the available RAM and forces the phone to reboot. This happens even if the “app optimization” in battery menu is turned off. Hard reset of the phone or clean install of Endomondo (tried different versions) also didn’t help.

The workaround described below works with Endomondo for Android, but should also work with other fitness tracking apps if adjusted properly. Disclaimer: It has some negative impact on the phones battery life during the workout, since the screen is not turned off.

On board audio not working – bypass it with USB sound card or DAC

06/11/201508/11/2019 Simon 1 Comment

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Issue

A friend of mine brought me this mini PC, based on a ZOTAC GeForce 9300-ITX WiFi motherboard. After freshly installing Windows 7 and all the required drivers from the motherboard manufacturer’s website, I connected speakers and noticed there is no sound output from any of the analog audio jacks. This PC features three jacks on the back and two on the front panel. After opening the Realtek HD Audio Manager, I noticed that analog jacks are all grayed out, which means the Realtek doesn’t detect when a device (speaker or headphone) is plugged in. I tried disabling front panel jack detection in HD Audio Manager and thus force the sound output from front panel jacks, even when device is not detected, no dice.
After trying a few more drivers; the latest driver directly from Realtek and a native Microsoft High Definition Audio Device driver, I concluded this is a hardware problem. I tried measuring audio jacks with a multimeter; no short circuits and no open connections relative to the motherboard. The fault lies in an on-board Realtek ALC662 IC chip or its circuit. I could try replacing the ALC662 IC, but since I don’t have one in stock, I opted for a second best option – replacing or bypassing the on board audio chip with an external USB sound card or DAC. Since an external USB sound card sticking out of the USB port would impact the portability of this mini PC to some extent, I decided to tear it apart and connect it directly to the unused USB header on the motherboard.

Below is a picture of the finished product – an external USB sound card or DAC, modified to fit inside of the computer case and connect directly to spare USB header on the motherboard.

Firefox not scrolling to Anchor Links Tags position (Solution)

31/10/201524/08/2020 Simon 15 Comments

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Issue

When clicking on an internal link, Firefox doesn’t scroll to the position of the anchored / hashtag / # element, during the first page load. Instead, it jumps to the middle or to the bottom of the page. If user clicks inside of the address bar and presses Enter, Firefox then scrolls to the correct position. Problem only occurs when link is not on the same page as the anchored element. If both are on the same page, Firefox scrolls to the correct position. Bug is not present in other browsers.

Example: If you click on link – GetGui DC charging adapter with ammeter New tab opens and Firefox should scroll directly to the element with ID “getgui-current-measuring-adapter”. Instead it scrolls to the middle or to the bottom of the page, as seen in the screenshot below.

Problem occurs because Firefox tries to scroll to the anchored element before the page is even loaded and the element is actually created. Since it can’t locate the anchored element, it scrolls to the middle or to the bottom of the page.