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Discussion Starter · #1 ·
I received my ZT-180. At first time I have not any problems with connection to my wifi AP, but after few days it died. I have changed firmware a few time, go to wifi settings, it still don't work!today it worked for few seconds - show two AP , but after that it lode them...Have somebody any ideas? how I can to check is it hardware or software problem?
 

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Hello,I had the same problem. I expect that your signal is too low. 1. improve your internal antenna (search for thread)2. If this doesn't help relocate your router.3. choose the wlan settings for permanent wlan, and no switch off during standby.Give it a tryRainer
 

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Are you sitting in the same room as the router is in? If you didn't change any settings, and it suddenly stopped working.. it could either be hardware defect or not connected properly, or your Zenithink has bugged OS running. Try to flash it again?Few things to keep in mind in order for it to workThe device can only detects 2,4 GHz frequency wifi.The device only detects B/G signals. So if you're using A or N, it wont work.The device can only detect WPA/WPA2 encryption. Preferable WPA2 TKIP+AES encryption.
 

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Discussion Starter · #6 ·
I have flashed it a few times. than test wifi again and again )so, my router is b/g, and signal is fine, when it see it he show full signal (high level), and when I began insert secure code for access to AP and at this moment zt-180 losing AP, he don't see them...so, I think, that it lose wire's contacts or something like this...what are u think about this?
 

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NuvaK77;45614 said:
2 Tosko is ZT-180 support external usb-wifi stick?
There are some people speculating that it works. Which models, I don't know. Just search for a model that is linux compatible because android is based upon the Linux kernel and GNU software.
 

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Discussion Starter · #11 ·
I have tried to make my access point free access, but it didn't help. It doesn't see AP independent is AP with WEP or without that. so I think my zt-180 has internal problem with wifi.so who have it, please tell me how working ur wifi? with problem, stability?my seller said that it's their (zt-180's) common problem, that it is not unusually problem, so please tell me about ur zt-180... thanks )))
 

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WIFI works, but the range is bad (bad antenna design). Tends to lose connection when getting out of range and requires a toggle of the Wifi enable switch to bring back online.The WIFI module gets really hot, applying a patch to a config file to reduce the Tx power to 20% generally helps and increases stability.People have posted tips to attach their own antennas (e.g. wire loop or biquad antenna designs) to increase the range a lot. Some have also attached extra heat spreaders to the wifi module.Wifi hurts battery life a lot.
 

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[quote name='Christian Buchner;46673]WIFI works' date=' but the range is bad (bad antenna design). Tends to lose connection when getting out of range and requires a toggle of the Wifi enable switch to bring back online.The WIFI module gets really hot, applying a patch to a config file to reduce the Tx power to 20% generally helps and increases stability.People have posted tips to attach their own antennas (e.g. wire loop or biquad antenna designs) to increase the range a lot. Some have also attached extra heat spreaders to the wifi module.Wifi hurts battery life a lot.[/QUOTE']Here is what I did and hope I can post all the pictures. I first cut away the antenna trace, about 1/4" and soldered a small diameter piece of 50 ohm coax cable to the antenna output and the shield of the coax to ground. The length of coax is not important since it is shielded it will have no effect on the antennas performance. I made it long enough to be easy to work with. I used an old WiFi antenna I had and just took it out of it's case. I soldered the center conductor to the antenna and cut back the shield. I used shrink sleeve to insulate it and just let it float in the bottom of the unit. As for the RT3070 chip, I took off the "RF can" and put some Shin-Etsu MicroSi Thermal Compound on the top of the chip, making sure there was enough to fill the void between the chip and the "RF can". This will allow the heat from the chip to dissipate though the can. You need to keep this circuit shielded for it to work properly so keep the can on the board..... Sorry, I can only post 5 pictures per post, so I will have to do another post with the rest of them there.
 

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Part two of the pictures. Two pictures are from after the modsAs for the WiFi's 3070 getting hot and eating power, I've rooted my pad and I'm playing with the transmit power setting. It's set to 100 from the factory, I first reduced it to 20, too low and after I flash my pad with the new software upgrade tomorrow, I'll try something like 65 and see how hot it gets and how long it's battery life is after the new setting.
 
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