Hytera md-785 wont turn on

[21RPT]

tHANKS IN ADVANCE FOR READING
Greetings from Madrid, Spain
I have this problem after changing codeplug on my MD-785: the radio wont turn on for normal operation. It only turns for a sec and after showing the hytera logo the radio turns off, so I can not get to the CPS wia USB port and try to reset to default. This is, as the radio doesnt turn on properly, it is not detected by the laptop or PC. Strange thing is that the firmware update process seems to work, as the dial turns red and apparently updates firmware, but no efect on the other problem. Maybe it has to do with lack of correspondence between cps and firmware, but cant discard this as by no means I can make the radio turn on correctly.
any help will be much appreciated, kind of desperate here, as it was a gift.
Again, thanks in advance
EA4GVR
Tony
Madrid

 

[PA3CQJ]

Possible solution:

Check your codeplug for Common > accessories > Ignition Sense it should be Off.
If not make a connection from the 12V line to pin 26 on the 26 pin connector on te back of the radio.
set the ignition sense to Off and write the codplug.

Rutger

 

[21RPT]

thanks

Thanks for your input. maybe, maybe.... I will check the codeplug and see if the ignition option is set to off.
If I understand you well, I must apply 12 volt (+ terminal only in my power source) to pin 26.
I mean I will connect balck and red to my home power source and add ONLY +12 again to pin 26.
Sorry for repeating but messing with red cables is scary sometimes haha.
I appreciate your tip thanks again.
EA4GVR
Tony
Madrid Spain

 

[PA3CQJ]

The 12V connection to pin 26 is extra to the normal + and - conections.
Tis is used in cars where the ignition switches the 12 V on and the set
senses that.
With ignition sense on and no 12V on pin 26 it swithes off..

Rutger

 

[21RPT]

IT WORKED!!!!

Rutger, PA3CQJ
Thank you soooo much!
I followed your suggestion and the radio is back to life. Now I can connect it to the PC and adjust the codeplug.
If you ever vistit Madrid, beer and paella is on me my friend
Thank you very very much.
Take care
Tony
EA4GVR
QRV on DMR TG 214
Madrid
Spain

 

[ottosykora]

This I will write into my manuals...sure this will happen to me one day too

 

[PA3CQJ]

You are welcome,

it happend to a few hams here after upgrade of the firmware and the CPS.
No idea how it changed.
Another reason why ypu won't be the first to upgrade...

You also always have to check if there is a password set somewhere
Better save than sorry.

Rutger