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Harness Repair
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When installing solar water heaters, you must take its tilt angle and orientation seriously. This affects the efficiency of the heat collectors. It also ensure the panels receive maximum amount of solar energy through different seasons, especially winter, when there's little sunlight. With proper setup, solar collectors can be smaller -- this means they take up less space -- and these are surely less expensive than larger panels.

For folks living in the northern hemisphere, their collectors need to be tilted southward. The tilt angle is 15 degrees plus the latitude of the installation site. This is the ideal configuration that allows you to collect maximum sunlight all year round. For example, Arizona has latitude of 33 degrees. Adding 15 degrees to its latitude gives us 48 degrees -- this is the tilt angle your panel should be in order for it to harness maximum energy. But this is just theory...

Many homeowners choose to conform the tilt angle to the inclination of their roof. They are concerned about the aesthetics of the installation. After all, who would love to see a gigantic piece of material sticking out like a sore thumb from their roof? Although we will not achieve an optimized configuration (from an engineering point of view), this setup serves the user's needs and wants after all.

Fortunately, solar heat collectors are more forgiving than their photovoltaic panel cousins. Tilt deviations that fall within 20 degrees (either direction) from the optimal angle will not cause serious loss to their efficiency. In fact, tilting them up to 15 degrees northward from its optimum angle can have its advantages. During summer, water will not overheat and during winter more hot water is produced.

Similarly, tilting your heat collectors southward (away from the optimum tilt angle) can result in more overheating during summer and less hot water during winter. This may not be a bad thing after all -- some folks would prefer to have more hot water during summer to maintain their pool temperature. With this knowledge in mind, you can adjust the angle to suit your needs.

Preferably, tilt angle is allowed to be changed according to seasons. But the hardware required to implement this setup often end up as an ugly structure of metal and joints. Not many homeowners are receptive to such mess. Moreover, there will be more moving parts to be maintained.

When orientating your heat collectors, you should ideally point them to true south. Similar to tilt angle, heat collectors can tolerate a far wider deviation in orientation angle than solar panels. They can receive most of the solar energy even if you installing them 15 degrees off true south. Beyond this tolerance, the effectiveness of the heat collector decays rapidly.

You may often be forced to make a choice between an east-biased or west-biased orientation away from true south. Perfect orientations tend to be impractical at times. If you're in this fix, choose the west so heat collectors can be exposed to more heat as a result of higher ambient temperatures in the afternoons.

As you line up your compass to find true south, remember that it is pointing to magnetic south instead. Corrections must be made to locate the optimum orientation. To do this, you need to compensate for the magnetic declination of your site.

As you are evaluating the installation site, remember that shadows cause your heat collectors to be drastically less efficient. Although solar water heaters are not as sensitive to shading, it is good to place them in an open, unobstructed location from 9am to 3pm so they can be exposed to the maximum amount of sunshine during this critical period. Using a standard shade analysis tool like a solar pathfinder, you can make it easier for yourself to evaluate the shading condition of your location.

You can finally prepare to mount the collectors, having determined its orientation, tilt angle and location. Whether you buy the mounting rack or make it yourself, the choice of material is as important. In areas of low humidity, painted angle iron may be used. Otherwise, materials like aluminum or stainless steel is more suitable as they are more resistant to corrosion. Solar water heaters installed in rainy, tropical and coastal climates will benefit from these materials.

John Greenspan is an expert in DIY solar panels for home and has build many solar power generators in his spare time. Are you interested in building DIY Solar panels? Pick up your FREE "How To Build Solar Panels" eBook at => http://www.diysolarpanelsworld.com

Repair damaged Toshiba PA3237U-1ACA AC Adapter power jack

In order to access and repair the Toshiba PA3237U-1ACA AC Adapter power jack, it’s necessary to disassemble the laptop and remove the top cover assembly (palm rest). Here’s an example of removing the top cover assembly from a Toshiba Satellite L355D, you’ll have to follow these steps.
In my case both, the Toshiba ac adapter power jack and mounting brackets on the base assembly got broken. Even if you replace the broken jack with a new one, it will not stay attached to the base. If you send a laptop with a damage like that to a repair shop, they will recommend replacing the Toshiba PA3237U-1ACA AC Adapter power jack harness and laptop base. This repair will easily cost over $200 but I have a better idea how to fix it for $3 without replacing the base assembly.
Using a pocket knife remove plastic supports from the internal side of the base assembly, so the side where the new jack will be mounted is flat. Again, using the pocket knife remove the plastic wall surrounding the mounting hole. Make the hole larger, so then new jack fits in.
The new Toshiba PA3237U-1ACA AC Adapter jack is too long and if you install it as is the laptop cover will not sit properly on the base. It happens because one of the speakers (in Satellite L305D) is located very close to the power jack. It will work if you make the jack shorter. You can cut off part of the long lead or simply bent it as I did. After it’s done coat both leads with generous amount of solder.
Now remove the damaged Toshiba PA3237U-1ACA AC Adapter power jack from the laptop and cut off wires somewhere close to the jack base. Remove isolation, twist wires and coat them with solder. The red “+” wire will connect to the lead in the center of the new jack. The black “-” wire will connect to the lead on the side – the one you made shorter. In some laptops Toshiba uses green wires instead or red wires. They also should be soldered to the “+” lead in the center of your new jack.
WARNING! Check the polarity before you apply power to the laptop.

Toshiba PA3237U-1ACA AC Adapter Description: (http://www.papatek.com/Toshiba-Adapter/Toshiba-PA3237U-1ACA-AC-Adapter.html)
Input: AC100-240V (worldwide use)
Output: DC15V 8A
Power: 120W
Outlet: 2-prong
Connecter size:  4-hole Tip
Item Includes: AC Adapter and Power Cord
Performance: Short Circuit Protection and Overload Protection
Condition: new
100%OEM compatible, guaranteed to meet or exceed OEM specifications!

Toshiba PA3237U-1ACA AC Adapter Warranty
12 months warranty
For return of non-defective product within the first 10 days from date of purchase, full refund.
Within the whole product warranty days, unartificial defective product returns are accepted for replacement, and we will afford all shipping fee.

See more information, you can visit: http://www.papatek.com

About the Author

Papatek.com locates in Santa Clara, is a direct sales office and service center of our replacement IT parts manufacture. We currently supply brand new AC Adapter, Rechargeable Battery, DVDRW Drive, LCD Panel, Laptop Keyboard, Floppy Disk Drive and many others for almost all name brand laptops and printers.

Anyone know an approximate cost to have the blinkers re-wired in a 2000 Chevy Malibu?

The blinkers don't work. It's not the fuse, the relay, or the switch. The only thing left (I think) is the wiring. My husband said something about a 'wiring harness'. Sounds like an expensive repair. Can anyone give me an approximate cost?
My husband was a mechanic in the Marines for 4 years, so he knows the basics. He replaced the bulbs, fuse, relay, and switch. So lets assume he did it right and thats not it.

Did you check the bulbs? That easy to fix. And the wiring shouldnt be too expensive since they dont have to really do anything except take the light off to get to them, maybe $25 - $50.

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The first clinical trial of adipose (fat) tissue-derived stem and regenerative cells (ADRCs) for the treatment of no-option chronic heart disease patients showed the following: the procedure was safe and feasible; it demonstrated a statistically significant improvement in maximum oxygen consumption (MVO2) and patients’ aerobic capacity measured as metabolic equivalents (METS); and reduced the ...

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