I find the damage caused by reversed polarity or over voltage on an AT-778UV
Жүктеу.....
Пікірлер: 30
@CanadaGunTube3 ай бұрын
Thanks Brother, just got my unit up and running again
@user-hl2fv5be9sАй бұрын
Thank for all your help Iv finally fixed it
@julianrobertson33034 ай бұрын
Thank you for sharing , it was very informative .
@Lu6fg4 жыл бұрын
Hello, do you have any hidden menu or way to increase the gain of the microphone of this radio? it has very little audio in tx
@Stover1594 жыл бұрын
is there a way to adjust the high power on this radio?
@KrzysztofStrug3 жыл бұрын
hello, thanks for this video, do you think is it possible to power this radio with li-ion 4s pack (16.8V for fully charged)?
@tonyweavers42924 ай бұрын
An interesting video, thanks. I have one of these radios. Whatever signal I receive the S meter shows 9. Is there a menu to adjust this?
@g1fsh4 жыл бұрын
Yep deffo reverse polarity you are right Gary. Iv had this from people me self. Saying oh it arrived like this lol. I actually saw one bloke blow one up in a car in front of me and he said it must have been faulty b4 i plugged it in lol. We do get them dont we hahaha. Very informative video.
@johnspartan7103 Жыл бұрын
I have the same radio. No volume at all unless I press and hold the MON button. Everything else works good. Any thoughts?
@lugulinux3 жыл бұрын
Hola amigo, tienes el codigo del transistor power rf y del regulador de voltage?, saludos
@andysuarez33552 жыл бұрын
Necesito el esquema, tengo una q no me activa el audio
@JPDW3072 Жыл бұрын
Mine doesn't start up too.
@KevinLever-gq4sv2 ай бұрын
i need a power output do you know the part number
@daveanddee4962 Жыл бұрын
HI CAN YOU HELP,IVE GOT 4 OF THESE AND 3 OF THEM HAVE GONE FAULTY. THE TX POWER AS DROPPED TO NEXT TO NOTHING EXAMPLE THE AMP DRAW WAS 2 AMP LOW POWER 4 AMP MID POWER AND 6 AMP HIGH POWER. APPROX NOW ALL 3 POWER LEVELS ONLY DRAW 1 AMP SO CAM ONLY TALK TO PEOPLE UNDER HALF A MILE. STRANGE 3 RADIOS OUT OF 4 ARE SAME. CHEERS FOR ANY IDEAS Dave.
@ralfrlc7981Ай бұрын
Hello, thank you for your video. On my Retevis RT95 only the loudspeaker of the hand microphone works ???device loudspeaker and headphone output do not work. Of course, the software/device settings were checked for LS or LS and manual. Do you know this error?
@TheGazLab
Ай бұрын
It may be the speaker itself is there a signal at the speaker if you look with an oscilloscope or 4-8 ohm with an AVO?
@daveanddee4962 Жыл бұрын
Dose anyone know which output this radio has and were to buy them?.
@PaulStuartTX
Жыл бұрын
Needing a PA replacement myself. Lift the clamping strip from the top of the PA to reveal the part number. It is a Motorola M9060M or as I've also seen MRF9060M. There's a couple on Ebay. Good luck.
@lugulinux4 жыл бұрын
ello Friend!!! How is that radio? They say she is very deaf and that the output transistor burns easily, I listen to your experience with this Chinese team, dearest
@TheGazLab
4 жыл бұрын
It's a very cheap radio, I've found it to be a fun and very well behaved radio that performs very well.. after a year NO burnt PA :-))
@indianna56492 жыл бұрын
I know it's an old post. But buy any chance would you have a solution for the poor low audio quality. 2 mtr reports are always the same low audio. Cheers
@TheGazLab
2 жыл бұрын
ou can try making sure the radio is set for wide.. I have seen a lot of chinese radios work as they should on wide.. Gaz
@indianna5649
2 жыл бұрын
@@TheGazLab cheers gaz.
@waldopetrone51752 жыл бұрын
Hello there, this is the second radio AT-778UV that I got, the first one lasted 2 weeks and after switch it on it display Please enter password, I returned and got a replacement, this one lasted 6 month and the same problem, is there any fix for that? the factory is not anwsering ma email and have no hope, can you suggest anything?
@TheGazLab
2 жыл бұрын
Factory has been on holiday, hope you have it fixed.. but do contact your suppliers directly they may be able to help
@ElectronicSupersonic5 ай бұрын
No fuse and no series diode for reverse polarity protection? Crazy
@TheGazLab
5 ай бұрын
The tvs diode is the reverse polarity protection .. it goes short and often blows the inline fuse.. gaz
@JPDW307210 ай бұрын
How much does the repair cost?
@TheGazLab
10 ай бұрын
if you do it yourself $10 if you get an engineer to do it 50-100 ??
@JPDW3072
5 ай бұрын
Thanks so much for your answer. I' m so sorry I missed your answer 5 months ago @@TheGazLab
Пікірлер: 30
Thanks Brother, just got my unit up and running again
Thank for all your help Iv finally fixed it
Thank you for sharing , it was very informative .
Hello, do you have any hidden menu or way to increase the gain of the microphone of this radio? it has very little audio in tx
is there a way to adjust the high power on this radio?
hello, thanks for this video, do you think is it possible to power this radio with li-ion 4s pack (16.8V for fully charged)?
An interesting video, thanks. I have one of these radios. Whatever signal I receive the S meter shows 9. Is there a menu to adjust this?
Yep deffo reverse polarity you are right Gary. Iv had this from people me self. Saying oh it arrived like this lol. I actually saw one bloke blow one up in a car in front of me and he said it must have been faulty b4 i plugged it in lol. We do get them dont we hahaha. Very informative video.
I have the same radio. No volume at all unless I press and hold the MON button. Everything else works good. Any thoughts?
Hola amigo, tienes el codigo del transistor power rf y del regulador de voltage?, saludos
Necesito el esquema, tengo una q no me activa el audio
Mine doesn't start up too.
i need a power output do you know the part number
HI CAN YOU HELP,IVE GOT 4 OF THESE AND 3 OF THEM HAVE GONE FAULTY. THE TX POWER AS DROPPED TO NEXT TO NOTHING EXAMPLE THE AMP DRAW WAS 2 AMP LOW POWER 4 AMP MID POWER AND 6 AMP HIGH POWER. APPROX NOW ALL 3 POWER LEVELS ONLY DRAW 1 AMP SO CAM ONLY TALK TO PEOPLE UNDER HALF A MILE. STRANGE 3 RADIOS OUT OF 4 ARE SAME. CHEERS FOR ANY IDEAS Dave.
Hello, thank you for your video. On my Retevis RT95 only the loudspeaker of the hand microphone works ???device loudspeaker and headphone output do not work. Of course, the software/device settings were checked for LS or LS and manual. Do you know this error?
@TheGazLab
Ай бұрын
It may be the speaker itself is there a signal at the speaker if you look with an oscilloscope or 4-8 ohm with an AVO?
Dose anyone know which output this radio has and were to buy them?.
@PaulStuartTX
Жыл бұрын
Needing a PA replacement myself. Lift the clamping strip from the top of the PA to reveal the part number. It is a Motorola M9060M or as I've also seen MRF9060M. There's a couple on Ebay. Good luck.
ello Friend!!! How is that radio? They say she is very deaf and that the output transistor burns easily, I listen to your experience with this Chinese team, dearest
@TheGazLab
4 жыл бұрын
It's a very cheap radio, I've found it to be a fun and very well behaved radio that performs very well.. after a year NO burnt PA :-))
I know it's an old post. But buy any chance would you have a solution for the poor low audio quality. 2 mtr reports are always the same low audio. Cheers
@TheGazLab
2 жыл бұрын
ou can try making sure the radio is set for wide.. I have seen a lot of chinese radios work as they should on wide.. Gaz
@indianna5649
2 жыл бұрын
@@TheGazLab cheers gaz.
Hello there, this is the second radio AT-778UV that I got, the first one lasted 2 weeks and after switch it on it display Please enter password, I returned and got a replacement, this one lasted 6 month and the same problem, is there any fix for that? the factory is not anwsering ma email and have no hope, can you suggest anything?
@TheGazLab
2 жыл бұрын
Factory has been on holiday, hope you have it fixed.. but do contact your suppliers directly they may be able to help
No fuse and no series diode for reverse polarity protection? Crazy
@TheGazLab
5 ай бұрын
The tvs diode is the reverse polarity protection .. it goes short and often blows the inline fuse.. gaz
How much does the repair cost?
@TheGazLab
10 ай бұрын
if you do it yourself $10 if you get an engineer to do it 50-100 ??
@JPDW3072
5 ай бұрын
Thanks so much for your answer. I' m so sorry I missed your answer 5 months ago @@TheGazLab