How to quick fix the poor Wi-Fi signal for MK808 Android TV Stick. The "quick fix" is to disconnect the shield ground of the antenna wires to the circuit boa... Video Rating: 4 / 5
I have a similar issue with a tablet I bought recently. Unfortunately the electronics are a bit smaller there so it's not quite as easy to fix, can't really tell which solder to cut. Guess I'll have to wait for my electronics expert brother to visit, unless there is some way to measure it?
Hey everyone. My wifi speed is 208kB/s down and 106kB/s up. uplink is fine but downlink should be something like 2048kB/s. I've orgiginal mk808b from geekbuying. Which is the antenna for the downlink? one antenna is connected via 2 pins (not shorted) the other one is connected via a wire (2in1) which is shorted so i guess this antenna is for downlink. Is there any problem just using 2 wires for the antenna?
Not all antennas are a DC short and that one certainly isn't ... In the video you can clear see the break in the copper foil between the large ground plane and the driven element which looks to be about a 1.4 wavelength. Like the gentleman who made the video noted by cutting the braid it no longer acts as a 50 ohm transmission line but as part of the antenna. It also looks to be close to a 1/4 wavelength @ 2.2GHz which is probably why it still works well (Anything is better than a short)
I'm looking to embed one of these in a Droid Bionic lapdock and heard they had WiFi problems but if this is all it is it's not going to matter with what I'm doing. In fact mounting a couple of foil antennas behind the bezel of the LCD and running some white Mil-grade teflon coax I have through the opposite hinge as the LCD wiring looks like it's real doable .... Just like a real laptop .... Then again a SMA jack and a 'Cantenna' and I have a long distance multimedia monster
Hi Bob i find this in the liliputing site! MK808 mini PCs. In a nutshell, it involves opening up the case, removing the antenna, and attaching a 12 cm piece of wire to act as an external antenna, the process involves use of a soldering iron — and if you don’t know what you’re doing you could damage your device. But part of the appeal of these Android TV sticks is that they’re so cheap you might not mind if you break one in the name of science.
Hi Bob, thanks for the great tutorial. I have one small issue. Though my unit is an MK808, the insides look just like an MK808 B, minus the Bluetooth. The wires inside mine are not as clearly differentiated as they are on yours, making it pretty much impossible for me to tell which one is the antenna and which one is the ground. Can you provide some help with this issue? Thanks in advance and keep up the good work!
Solo que hay que modificar la conexión de las antenas como indica el Sr. iasitu, estas antenas están autocortocircuitadas, solo hay que desoldar la malla del cable en el punto donde esta soldada a la tablilla (no hacerlo del lado de la antena) en mi caso solo tiene cable en una antena, en la otra no tiene cable, esta conecta por un par de pines que hacen contacto al ensamble del equipo, resolví con tiras pequeñas de cinta de aislar pegadas en la antena donde hace contacto el pin GND. Saludos
I got my mk808 got three here in all and the wifi does vary a lot on them all one of them shows 2 bars but it doesn't load the webpages very well and another loads them very fast and works a treat. What I am unsure of since instaling the finless 1.5a I no longer see a way to install pkg files.
for my case, my unit is shorted on the board it self... i remove the antenna cable completely & test for connectivity - It is shorted. (few member in freaktab also confirm this on their device) in the case the board is shorted, i dont think unsolder the gnd will now improve signal. can u test yours and let us know??
I opened up my MK808 and upon investigation, found that, its not the solder pads thats shorted, but the antenna itself. You can test this by using a continuity tester on the antenna on the spring loaded connector side. if you test the pads on the antenna, where the spring loaded connectors connect, you see that its shorted. I think if we identify the short, and find the design of the antenna itself, we can cut the antenna patch, and remove the short. I am going to try this and will update soon
hi bob, got my mk808 last december and i want to upgrade to your custom rom 1.6, can you help me? afraid to brick it. just notice also than wifi antenna is so weak sometimes signal drop sinificantly. thank you :)
Incercati sa alimentati ministick-ul prin ambele porturi miniusb. In realitate nu este o problema cu antena ci este o problema de sursa de alimentare. Sursa de alimentare desi teoretic ar trebuie sa furnizeze 2A in realitate cerintele de sistem se pare ca depasesc 2A asa ca eu unul cel putin mi-am rezolvat problema alimentand stick-ul atat prin portul mini usb consacrat alimentarii cat si prin portul mini usb OTG cu un alt alimentator.
In my case I solved issues concerning system stability and wifi with 2 power supply, one on miniusb dedicated for power and one on otg miniusb port in the same time. In full load system require 2A. In my case 572h of continuous functioning of system now.
I have a similar issue with a tablet I bought recently. Unfortunately the
ОтветитьУдалитьelectronics are a bit smaller there so it's not quite as easy to fix, can't
really tell which solder to cut. Guess I'll have to wait for my electronics
expert brother to visit, unless there is some way to measure it?
Hey everyone. My wifi speed is 208kB/s down and 106kB/s up. uplink is fine
ОтветитьУдалитьbut downlink should be something like 2048kB/s. I've orgiginal mk808b from
geekbuying. Which is the antenna for the downlink? one antenna is connected
via 2 pins (not shorted) the other one is connected via a wire (2in1) which
is shorted so i guess this antenna is for downlink. Is there any problem
just using 2 wires for the antenna?
just opening the case has worked for me.. substantial difference...
ОтветитьУдалитьi still dont get this quick fix... lol
ОтветитьУдалитьdid u figure out if u could?
ОтветитьУдалитьthank you so much,this worked in a 100% for my mk808 ...GREETINGS FROM
ОтветитьУдалитьCHILE ¡¡
Not all antennas are a DC short and that one certainly isn't ... In the
ОтветитьУдалитьvideo you can clear see the break in the copper foil between the large
ground plane and the driven element which looks to be about a 1.4
wavelength. Like the gentleman who made the video noted by cutting the
braid it no longer acts as a 50 ohm transmission line but as part of the
antenna. It also looks to be close to a 1/4 wavelength @ 2.2GHz which is
probably why it still works well (Anything is better than a short)
I'm looking to embed one of these in a Droid Bionic lapdock and heard they
ОтветитьУдалитьhad WiFi problems but if this is all it is it's not going to matter with
what I'm doing. In fact mounting a couple of foil antennas behind the bezel
of the LCD and running some white Mil-grade teflon coax I have through the
opposite hinge as the LCD wiring looks like it's real doable .... Just like
a real laptop .... Then again a SMA jack and a 'Cantenna' and I have a long
distance multimedia monster
You can do "pigtail mod" like me. It's quite easy on MK808B. My signal
ОтветитьУдалитьraised from -85dBm or -90 dBm to -65dBm or -70dBm
A Quick Fix for MK808 WiFi issues....
ОтветитьУдалить#MK808 #MiniPC #AndroidMiniPC
So does the mk808 have heat issues at normal operation or just over
ОтветитьУдалитьclocking? is the ug802 any better as far as heat? thanks
Hi Bob i find this in the liliputing site! MK808 mini PCs. In a nutshell,
ОтветитьУдалитьit involves opening up the case, removing the antenna, and attaching a 12
cm piece of wire to act as an external antenna, the process involves use of
a soldering iron — and if you don’t know what you’re doing you could damage
your device. But part of the appeal of these Android TV sticks is that
they’re so cheap you might not mind if you break one in the name of science.
Hi Bob, thanks for the great tutorial. I have one small issue. Though my
ОтветитьУдалитьunit is an MK808, the insides look just like an MK808 B, minus the
Bluetooth. The wires inside mine are not as clearly differentiated as they
are on yours, making it pretty much impossible for me to tell which one is
the antenna and which one is the ground. Can you provide some help with
this issue? Thanks in advance and keep up the good work!
Solo que hay que modificar la conexión de las antenas como indica el Sr.
ОтветитьУдалитьiasitu, estas antenas están autocortocircuitadas, solo hay que desoldar la
malla del cable en el punto donde esta soldada a la tablilla (no hacerlo
del lado de la antena) en mi caso solo tiene cable en una antena, en la
otra no tiene cable, esta conecta por un par de pines que hacen contacto al
ensamble del equipo, resolví con tiras pequeñas de cinta de aislar pegadas
en la antena donde hace contacto el pin GND. Saludos
I got my mk808 got three here in all and the wifi does vary a lot on them
ОтветитьУдалитьall one of them shows 2 bars but it doesn't load the webpages very well and
another loads them very fast and works a treat. What I am unsure of since
instaling the finless 1.5a I no longer see a way to install pkg files.
for my case, my unit is shorted on the board it self... i remove the
ОтветитьУдалитьantenna cable completely & test for connectivity - It is shorted. (few
member in freaktab also confirm this on their device) in the case the board
is shorted, i dont think unsolder the gnd will now improve signal. can u
test yours and let us know??
can you replace the wire or antenna with a paperclip?
ОтветитьУдалитьI opened up my MK808 and upon investigation, found that, its not the solder
ОтветитьУдалитьpads thats shorted, but the antenna itself. You can test this by using a
continuity tester on the antenna on the spring loaded connector side. if
you test the pads on the antenna, where the spring loaded connectors
connect, you see that its shorted. I think if we identify the short, and
find the design of the antenna itself, we can cut the antenna patch, and
remove the short. I am going to try this and will update soon
The ground is still there. Ground comes from the usb power cable.
ОтветитьУдалитьMany times is just the typical chinese price war. They are trying to sell
ОтветитьУдалитьmore by lowering the price and this is done by lowering the quality.
If PIFA antenna is used, 2 pads are actually shorted. In this case, you
ОтветитьУдалитьcan't use multimeter to check continuity. Watch this video
watch?v=7HCCi6oWfBs
has your mk808 been working fine since you switched channels?
ОтветитьУдалитьhi bob, got my mk808 last december and i want to upgrade to your custom rom
ОтветитьУдалить1.6, can you help me? afraid to brick it. just notice also than wifi
antenna is so weak sometimes signal drop sinificantly. thank you :)
Incercati sa alimentati ministick-ul prin ambele porturi miniusb. In
ОтветитьУдалитьrealitate nu este o problema cu antena ci este o problema de sursa de
alimentare. Sursa de alimentare desi teoretic ar trebuie sa furnizeze 2A in
realitate cerintele de sistem se pare ca depasesc 2A asa ca eu unul cel
putin mi-am rezolvat problema alimentand stick-ul atat prin portul mini usb
consacrat alimentarii cat si prin portul mini usb OTG cu un alt alimentator.
In my case I solved issues concerning system stability and wifi with 2
ОтветитьУдалитьpower supply, one on miniusb dedicated for power and one on otg miniusb
port in the same time. In full load system require 2A. In my case 572h of
continuous functioning of system now.