I build simple circuits. I can't tell heads or tails what's what in a radio. It seems that James over at Star knows something about that and I'm thinking about asking him which one to change out or at least find out so I can have DTB do it.
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Viagra blue dot 'b' board problems
- Thread starter Lil'Yeshua
- Start date
I build simple circuits. I can't tell heads or tails what's what in a radio. It seems that James over at Star knows something about that and I'm thinking about asking him which one to change out or at least find out so I can have DTB do it.
This is quoting James in a email:
I do not have a warranty on them. You would have to contact Ranger Radio warrenty support they are the 1 making them. To give you a heads up the viagra boards we've been getting in we had no problems with. But the galaxy 959 and 2547 have had have a resistor changed on the board to make the viagra board work correctly. The voltage to the clarifier circuit is too low.
I do not have a warranty on them. You would have to contact Ranger Radio warrenty support they are the 1 making them. To give you a heads up the viagra boards we've been getting in we had no problems with. But the galaxy 959 and 2547 have had have a resistor changed on the board to make the viagra board work correctly. The voltage to the clarifier circuit is too low.
Hmm.... I've never worked with the Viagra boards before, as I usually do the P5/P6 conversion, but I find it strange that the issue with the Viagra board would be caused by a low voltage problem in the clarifier circuit, especially since unlocking the clarifier puts +8V directly into the circuit. Makes me wonder if an oscillator transistor that went south on the Viagra board itself. Wish I could be more help. 
~Cheers~
~Cheers~
Maybe. To power the Viagra board,the boards red power wire is soldered to 8 volts on the 959 main board
James from Star just replied:
I don't know off the top of my head I want to say it resistor 133 needs to be turned back into a 47 a resistor. They placed the wrong resistor in the clarifier circuit.
I don't know off the top of my head I want to say it resistor 133 needs to be turned back into a 47 a resistor. They placed the wrong resistor in the clarifier circuit.
Well, I guess if it were me, I'd try re-installing the Viagra board again, but this time, instead of putting the Viagra board's positive wire to a +8V source on the main PCB, I'd get a LM7808 (+8V voltage regulator IC, TO-220 case) and put the positive wire on the regulator. Run the Viagra board on an isolated +8V supply, and see if it still acts up. If it acts up still, I'm going to wager that there's something going on with the board itself, if it works, then I'd say perhaps the voltage source you were using before on the main PCB was unstable. Just a thought.
~Cheers~
~Cheers~
Viagra 120 Channel Mod PCB
DTB would know. I'm gathering info so that when I send my 959 back to DTB,he'll know what to do. That or I'll look at it myself.
DTB would know. I'm gathering info so that when I send my 959 back to DTB,he'll know what to do. That or I'll look at it myself.
Ok, just looked at the schematic, and if R133 isn't 47 ohms, it should be replaced as such. Technically, that's really not the right place to be finding +8V for the Viagra board. The +8V for the Viagra board should found elsewhere... but for ease of installation I can understand why it got put there. But yep, makes sense now. Change R133 to a 47 ohm and you should be good.
(edit) Can you have a look at R133, and tell me what the color bands are on the resistor? I'm curious as to what they have in there for a resistor at R133.
~Cheers~
(edit) Can you have a look at R133, and tell me what the color bands are on the resistor? I'm curious as to what they have in there for a resistor at R133.
~Cheers~
