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Alientech Pro 5.8

Waldo Pepper

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Does anybody know how to disassemble the Pro 5 8ghz Alientech? I need to change the female QMA connector . Please help
I’ve opened a couple of Alientech 5.8 boosters, most recently had to replace both amplifiers as both had fried.

Here are a few pictures, but remember I had to gut out the entire booster assembly and rebuild from scratch so what you’re seeing here are a different set of amplifiers, and totally rewired completely different from original. Plus, I must have the worse luck as even my second Alientech 5.8 booster is defective.

First, Remove both batteries. Then pop off the front plastic portion covering the antennas, then pop off the mid plastic assembly. From here, remove both the two mini outer black screws, one on each side of outer antennas. These two outer screws is what keeps the main metal bracket holding upper antennas, the backside of this metal bracket houses the amplifiers.

From here, once disassembled remove the defective QMA connector each held with two screws and a solder joint.

If you need additional pictures, very soon I’m going to rebuild another defective Alientech 5.8 booster and will take step by step pictures.

My original Alientech 5.8, burned out two amplifiers. So I gutted the unit, replaced both amplifiers with another set of 5.8 amplifiers and had to resolder in different connections. All worked well, even added a battery LED volt meter. Also, added in a push button switch. I may change that to a rocker type switch in near future.

Good luck, and these pictures should get you going.

Paul

3A483716-642B-4BA2-A810-54F0DC783CEC.jpeg BB68CF24-708B-4BE5-B244-AAC58D2518A6.jpeg 759919EE-083A-41DA-8328-9E673CF64B86.jpeg 9DDAF9E3-22C0-4D85-AFA0-8CE737A41724.jpeg
 
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tng7576650

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Thank you so much for your help. In your answer to the post, you stated "
Then pop off the front plastic portion covering the antennas, then pop off the mid plastic assembly. From here, remove both the two mini outer black screws, one on each side of the outer antennas. These two outer screws is what keep the main metal bracket holding upper antennas, the backside of this metal bracket houses the amplifiers." In the paragraph " how do you pop-off the mid plastic assembly" are there any screws that secure the front plastic portion of the covering the antennae? I hope if you can upload a picture of it. In reference to two mini outer black screws are they located inside the housing? First I would like to know how you remove the cover? I wish you have pictures of every step so that can help me to disassemble the unit. Thank you again.
 

Waldo Pepper

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Thank you so much for your help. In your answer to the post, you stated "
Then pop off the front plastic portion covering the antennas, then pop off the mid plastic assembly. From here, remove both the two mini outer black screws, one on each side of the outer antennas. These two outer screws is what keep the main metal bracket holding upper antennas, the backside of this metal bracket houses the amplifiers." In the paragraph " how do you pop-off the mid plastic assembly" are there any screws that secure the front plastic portion of the covering the antennae? I hope if you can upload a picture of it. In reference to two mini outer black screws are they located inside the housing? First I would like to know how you remove the cover? I wish you have pictures of every step so that can help me to disassemble the unit. Thank you again.
You’re welcome, okay I’ll post additional pictures of the breakdown tonight if all goes well.

I’ll breakdown the second defective Alientech 5.8 booster, pictures of each step.

👍
 

Waldo Pepper

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Thank you so much for your help. In your answer to the post, you stated "
Then pop off the front plastic portion covering the antennas, then pop off the mid plastic assembly. From here, remove both the two mini outer black screws, one on each side of the outer antennas. These two outer screws is what keep the main metal bracket holding upper antennas, the backside of this metal bracket houses the amplifiers." In the paragraph " how do you pop-off the mid plastic assembly" are there any screws that secure the front plastic portion of the covering the antennae? I hope if you can upload a picture of it. In reference to two mini outer black screws are they located inside the housing? First I would like to know how you remove the cover? I wish you have pictures of every step so that can help me to disassemble the unit. Thank you again.
Here you go, start from bottom corner then work around downward. Eventually, middle section will snap off. First remove both batteries, take your time disassembling booster. You’re going to cause some slight scratches from prying apart, which is why to start from bottom to hide the minor nicks.

Then, remove both side T-6 Torx screws to remove antenna assembly plate. These two screws may be regular screws, I’m seeing two different types from two same like Alientech 5.8 boosters.

Once center plastic section is off, slowly pry apart the antenna plate from back plastic assembly. From here, replace damaged or defective QMA connector.

Good luck, keep us posted.
Paul

68D44A5B-D81A-46C2-895C-0B9DA1738EDF.jpeg DCAA838B-F9F5-4DA0-A4C1-3559A14F4EB9.jpeg 417234A6-4075-4245-AD10-AB9D435A0DC6.jpeg 12C35B71-D07C-4AF3-BB45-6CCBE9711835.jpeg 1B013705-ADC6-4516-AC9D-E7ECDF5C367A.jpeg
 

tng7576650

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Thank you so much . You must be really smart to install new amplifiers . If you do not mind where can you purchased the amplifier that match the alientech antennae? Did you successfully fix or repair defective antenae? I know those guys that worked at Alientech only wanted you to buy new one so they can make money out if you. The Pro is made of cheap materials . They sing cheap solder or lead so solder joints where very weak. They are out to make profits . Well thank you again . Let me know if your defective antennae is successfully working after replaced both amplifiers.i will looking forward to see the results.
 

tng7576650

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After remove or disassemble the antennae. I do not know where can I get a hold of the female QMA and what it call. I search on Google but negative result . Please advise
 

Waldo Pepper

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Thank you so much . You must be really smart to install new amplifiers . If you do not mind where can you purchased the amplifier that match the alientech antennae? Did you successfully fix or repair defective antenae? I know those guys that worked at Alientech only wanted you to buy new one so they can make money out if you. The Pro is made of cheap materials . They sing cheap solder or lead so solder joints where very weak. They are out to make profits . Well thank you again . Let me know if your defective antennae is successfully working after replaced both amplifiers.i will looking forward to see the results.
Thank you, honestly I’m not that smart. Was fortunate to start with electronics when I was a kid, from there read books and built kits from books moving on to larger projects.

I’m not sure who sells QMA connector such as this particular one you’re needing. Personally, I would replace it with something similar and replace the cable end that connects from outside with a matching opposite connector.

Or, post on the classifies searching for a bad Alientech booster. Use this bad Alientech booster for parts, maybe someone has one and will let it go for postage only.

In regards to my recent Alientech 5.8 project, fortunately had two mini 5.8 GHz mini boosters on hand from another project, With some fabrication was able to make these two mini boosters work as replacements.

With the recent defective Alientech 5.8 booster, I’m going to replace the defective amplifiers with two mini 2.4 GHz type and replace antennas to 2.4 GHz as well. Going forward, it’ll be a 2.4 GHz booster. Have many spare 2.4 GHz amplifiers, too many actually.

Enjoy the hobby, very adventurous sport both building, repairing and flying 😊

Paul

49A97F37-73F6-430F-8F73-21C37308A089.jpeg
 
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tng7576650

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Does anybody in the forum know what type of Right Angle QMA connector for this Alientech Pro 5.8ghz.
 

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Waldo Pepper

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Is this the connector you need? Circled in yellow.

If you can’t find one, you can always solder the antennas cable directly to the booster antenna leads. Actually, only one wire needs to be soldered, the ground wire can be held on underneath the two screws mount.

Keep us posted

9F6F32F4-C4F7-4F51-9BD6-E36D531FE6F0.jpeg
 

tng7576650

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Actually , the female connector on the board is fine . Only need the part of the connector on the picture so I can redo the wire.
 

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Waldo Pepper

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Okay,I see now.

Going to send you a link in a private message, go here he has the cable connectors you need. Order a new set, he’ll fix you up with what you need.
 

tng7576650

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Thank you so much for ypur help . Can you send me a link through the forum. I am not familiar with private message how it work. I really appreciate it
 
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