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 SS9900 DC LOW?

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del6600



Posts : 3
Reputation : 0
Join date : 2019-06-28
QTH or Location : Herfordshire
Call Sign : 26-CT-2711
Equipment Used : Yaesu FT-891-Sirio Gainmaster 5/8-RG213-Watson Power meter-QRM Eliminator-MFJ1886 SW Ant.

SS9900 DC LOW? Empty
PostSubject: SS9900 DC LOW?   SS9900 DC LOW? Icon_minitimeSun Aug 11, 2019 8:28 pm

Hi,
I have a SS9900 radio.
When I switch on and call out all I am getting is "DC LOW"
I have tested the 13.8v 20A psu, that's ok.
To confirm this I took the radio out to my car and plugged it in
with the same result. I re-flashed the radio with the original
software it came with 16 months ago. Same problem?

Anyone any ideas what the problem is?

Hopeful

del
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Sgt Bilko

Sgt Bilko

Posts : 36
Reputation : 3
Join date : 2019-07-20
Age : 51
QTH or Location : Prestonpans. East Lothian
Call Sign : 108 ct 302 - mm0ibe

SS9900 DC LOW? Empty
PostSubject: Re: SS9900 DC LOW?   SS9900 DC LOW? Icon_minitimeSun Aug 11, 2019 10:49 pm

Try the programming software. I think you can set an upper and lower voltage.

Paul
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del6600



Posts : 3
Reputation : 0
Join date : 2019-06-28
QTH or Location : Herfordshire
Call Sign : 26-CT-2711
Equipment Used : Yaesu FT-891-Sirio Gainmaster 5/8-RG213-Watson Power meter-QRM Eliminator-MFJ1886 SW Ant.

SS9900 DC LOW? Empty
PostSubject: Re: SS9900 DC LOW?   SS9900 DC LOW? Icon_minitimeMon Aug 12, 2019 8:55 am

Sgt Bilko wrote:
Try the programming software. I think you can set an upper and lower voltage.

Paul

Thanks for the reply, have tried that = 14v > 11v?

I have just adjusted the voltage settings now 14v > 9v

When I key the mic now all I get is a black screen, when I release the key I get a beep.

Beeps and roger beeps have been turned off.

I am beginning to wonder if the TIP36C PNP Power Transistor or the 4 13N10 finals have gone? Suspect

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