Repairing a Crate TX15 Taxi amplifier battery

A friend gave me a Crate battery guitar amp that he used for busking. It is a nice 15 watt amp with an internal battery. Sadly it died, and its custom power adapter was misplaced. After several years the battery will fail, and it requires a functioning battery to work at all. Happily, new batteries are inexpensive, readily available, and easy to install.

Obtaining a replacement battery for the TX15

The original battery was a 4+ pound, sealed lead battery. Any replacement battery should closely follow the specs of the original. I bought this MightyMax Battery on Amazon, which is a perfect replacement.

There are many batteries that conform to the needs of the TX15, and they can be found at local hardware stores as they are commonly used in lots of equipment. It pays to look locally if you need something faster than Amazon.

The battery specs are as follows:

12 Volt, 7.2 Ah lead battery (mine was marked 1272).

Length: 5.94" (151 mm)
Width: 2.56" (65 mm)
Height: 3.94" (100 mm)
4 Lbs, 14.6 Oz
F1 terminals (which are a little smaller than F2 terminals)

My TX15's original (dead) battery.

Replacing the TX15's battery

My TX15 is made out of a vinyl-covered wood. To get at the battery:

Unplug the unit
Remove the six screws holding on the front grill (Note: this is a great time to clean up any crud that accumulated under the grill)
Remove the four screws holding the 8 inch woofer
Remove the woofer. Note it has wires attached.
Remove the speaker wires. Note orientation of wires (on mine, Blue+, White-)
Remove the two screws that hold down the steel battery bracket.
Remove the battery wires and withdraw the battery. Dispose of properly, It cannot go in the trash. Some places will give you a credit it you bring it to them.
Install new battery, reversing the above procedure.
Charge for 24 hours

Replacing the TX15 Power Adapter

Maybe you lost your power adapter or need a new one. The original one for my Crate is a 15 volts DC, 1.25 Amp unit. The center pin is positive. Since the original adapter was misplaced, I bought this replacement power supply, which supports 15 volts DC and has the correct polarity.

Label of an original TX15 Power Adapter

Testing

After charging up the battery for 24.. 28... 48 hours, I got... nothing. This unit will not work if the battery has completely failed, even if plugged in. Therefore I replaced the battery, as noted above, and I'm back in business.

Fixing a SodaStream Jet, part 1: Disassembly Guide

I've had my SodaStream Jet for years, and once in a while something has gone wrong. Disassembly is the first step to repair. Start with this article to see how to disassemble the SodaStream, and then once you have that down, scroll through my other articles to see how I repaired specfic SodaStream problems. SodaStream Jet Disassembly Guide Tools Required Flat head screwdriver Phillips head screwdriver 1. Remove the Carbonator. Duh. 2. Remove the black panel lever The front big black tilt lever needs to be removed first. Removing this panel is tricky, but it isn't impossible. Looking up at the bottom of the black panel, there are two tabs, one on the left and one on the right. These tabs fully secure the panel in place. The trick is to use a flat-head screwdriver under the plastic to gently lever the tabs out of the way. Note in the pictures how I approach these tabs with my screwdriver. I usually release the left side first, and then I release the right

Fixing a SodaStream Jet, Repair #2 - Broken Fill Button

My Soda Stream Jet's fill button broke, which means I can not longer carbonate water by pressing the pushbutton. This caused all sorts of grief in my household. Here is how I managed to repair my Jet to give it another 10 years of life (hopefully). First, a look at the button The fill button on the top of the SodaStream is actually a simple lever. Pressing down on the button moves a pin that does the actual work of pressing open the Carbonator's valve. Unfortunately, the axis point is fairly thin and can see a lot of stress. That's where my Soda Stream button cracked. [ I think the usage tip here is "don't over-press the button like a gorilla, it doesn't do anything but put high stress on the button."] Cracked levering point of the button The Pesky Lever Retaining Pin The Fix It was pretty easy for me to replace the button: Take off the back of the Soda Stream and remove the carbonator. Push out the the button lever's steel retaining pin. This takes qu

Fixing my Wahl 9918 Groomsman Beard and Mustache Trimmer

Not everyone would bother repairing a $25 beard trimmer, but why not fix something for under $5 instead of spending another $25? My Wahl 9918 Groomsman Beard and Mustache Trimmer has admirably performed its beauty duty for many years, but the time came when the battery just wasn't holding a charge any more. Most people would just put the trimmer in the trash and buy a new one, but I figured I could repair my otherwise excellent Wahl and save some money. In fact, even high priced trimmer and rotary shaver brands, like Norelco and Remington, can be easily repaired using a process similar to the one I used to fix my Wahl. Read on to find out how. I opened up the Wahl by popping off the black plastic faceplate with a tiny flathead screwdriver, which revealed two screws. By removing the two screws I was able to easily open up the unit, revealing the guts of the device. Backplate off, Revealing the screws The internals are rather simple: a motor, a simple circuit boar

Sodastream Carbonator Leakage, Usage, and Weight

SodaStream 60L "Carbonator" CO2 cylinders have a specific weight when empty, plus about 410 or so grams for the CO2 they should have when they're "full". A little while ago I went to buy a replacement Carbonator from my local hardware store. The dealer pulled a new Carbonator out of the box and sensed it was lighter than usual. He put the "light" Carbonator in the "empty" pile and sold me a different one. At that moment I concluded that it would be smart of me to weigh both new and empty SodaStream carbonators. Here are the results. Weighing a SodaStream Carbonator - for both Science and Consumer Protection. The dealer told me that sometimes the carbonators leak after they leave the SodaStream filling facility. That means there could be an opportunity for customers like me to get ripped off! The SodaStream cylinders I buy claim to have a net product weight of 410 grams - and that means that a full Soda Stream Carbonator shou

MacBook: burnt out magsafe connector repair

My MacBook (A1342 model from 2009-2010) stopped working, thanks to a cheap knockoff magsafe charger. The magsafe connector looked burnt with heat-distorted melted plastic and some black carbon surfaces. Plugging in the charger resulted in no lights and no action. My MacBook was dead. First I tried to clean up the connector with some Q-Tips, tooth picks and solvent, but that did little, as seen in this "after" picture (below). The heat generated by the aftermarket charger permanently deformed and distorted the MacBook's magsafe connector. Clearly the damage was significant. Burnt Magsafe Connector - Replacement Required! Looking at iFixIt , I determined that it would not be difficult to replace only the magsafe connector with the right tools. I hoped and prayed that the problem was isolated to the connector assembly and not the logic board. I bought a replacement magsafe connector assembly (available from Amazon) for under $20 and started to replace it by

The Yamaha DD-65 and YDD-60 Digital Drums

Almost everyone I know who is into drums should get their hands on the Yamaha DD65 . It's a low cost, fun little kit that you can throw in your car to jam with your buddies. It's a lot easier than throwing your gear in your Subaru. The DD-65, also known as the YDD-60. Eight pads in a pretty package. I've owned the older, venerable DD-55 for about five years. The DD-55 is the ancestor of the newer DD-65, and is an evolution of the DD-50, which was first released some time in the mid 1990s. I just put my DD-55 on this light snare drum stand it's ready for some jamming. The classic DD-55. Seven pads of rockin' fun, since about 2001. Yes, everyone will tell you that the DD-55 isn't actually a real drum kit. No kidding. However, a skilled drummer can get some great sound out of this little box, and you can definitely keep the band together with it. Plus, it's perfect for apartment living.

The Lance J. Technoweb

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