Author Topic: TS582000 Transmitter Problems (Read 1898 times)

Gunn · « **on:** January 08, 2014, 08:07:09 PM »

Today I crashed my quadcoper whilst flying FPV. When I found the wreck I noticed my antenna had "pinged off" (standard whip antenna), the fixing to the transmitter had come apart allowing the antenna to come a drift!

When I got home I powered the system up (with antenna attached), it did nothing! No power LED, no fan and no video output.

Now, I know having power to the system without an antenna will burn out the transmission circuitry but I wouldn't have expected to see the fan dead as well. This makes me think that some other component is faulty, I notice the power input goes through a diode, I'm hoping it could be as simple as that but I doubt it.

Has anyone got any electronic knowledge of these transmitters? I work in the electronics industry and quite handy with soldering equipment (for SMD components). If I had a circuit diagram or if anyone has any experience of this type of fault would be greatly appreciated.

Kind Regards

Gunn

babak_ea · « **Reply #1 on:** July 10, 2014, 05:49:09 PM »

Hello
I Have exactly the same problem!
I power it without antenna for only several sec.
I think that burn the power amp sig5004l.
when disconnect the connector between 5.8 module and other input board the fan start and the LED turn on.
any body can Help us?
Bob.

bigMouse · « **Reply #2 on:** July 10, 2014, 07:03:00 PM »

No experience with that particular vTX but with its 2W output I'd guess that with no antenna fitted the Power output stage would cook in seconds!

babak_ea · « **Reply #3 on:** July 11, 2014, 07:52:08 AM »

this rf module use Sig5004l amplifier (26db), how It's 2w power output?
may it's rf amplifier transistor on other side of PCB?

http://i.imgur.com/zaUXFuV.jpg
http://i.imgur.com/zOX1NTb.jpg
Bob.

bigMouse · « **Reply #4 on:** July 11, 2014, 08:54:23 AM »

Well this stuff is Chinese and they don't play by the rules!

http://www.banggood.com/Boscam-FPV-5_8G-2000MW-8CH-TS582000-RC5808-Transmitter-Receiver-p-918748.html?currency=GBP&utm_source=google&utm_medium=shopping&utm_content=miko_ruby&utm_campaign=rc-quad-uk&gclid=Cj0KEQjwlv6dBRDC7rGfrvidmJgBEiQAjd3hMBGTbTnT0ZnmD62HjjLGq4Wocpmi2AkqPk_DqUkaSQcaAlxC8P8HAQ

That model number is clearly listed as 2W output, they usually seriously over-drive these modules and add a cooling fan, not a good solution at all, getting 33dbm out of a 26dbm module! Leave the Tx output open circuit for a few seconds and its buggered. That also icludes any crash that breaks off the antenna, probably the most important mod would be to fit a very flexible antenna, nearly all the commercial ones are too stiff, they apply a leverage force to the sma socket which only support is the pcb track on the edge of the vTx board.