Topic: V2 DOA *update*

[tapinfool]

I got a V2 last week.

Finally got the cables to power it up.

Plugged everything in (YES, everything is plugged in and turned ON)...

NADA!!!

I have a show tonight...what to do ?

[page]

I got a V2 last week.

Finally got the cables to power it up.

Plugged everything in (YES, everything is plugged in and turned ON)...

NADA!!!

I have a show tonight...what to do ?

First thoughts. Are you feeding a 12v unit 6v?
Second, blown fuse?
Third, did you get the stock power supply a battery with it? (edit, my bad, thinking of the V3). Tried a different battery?

[tapinfool]

I got a V2 last week.

Finally got the cables to power it up.

Plugged everything in (YES, everything is plugged in and turned ON)...

NADA!!!

I have a show tonight...what to do ?

First thoughts. Are you feeding a 12v unit 6v?
Second, blown fuse?
Third, did you get the stock power supply a battery with it? (edit, my bad, thinking of the V3). Tried a different battery?

1. 6V (6V marked on unit) Using 9V DVD battery with brand new cable from Ted G

2. Is there an internal fuse? And if so, will I be able to access and change it?

3. Tried 3 different batteries. All of which are fully charged.

[flipp]

Does the V2 have selectable voltage, selection being made by means of internal jumpers or dip-switches? If fhat's the case check inside as it may be diferent than what is marked).

Not sure about a fuse as I've never used a V2 and have never seen the internals of one.

Also check continuity of the cable with a VOM/DVOM. Just because the cable is new doesn't mean it is good (though I've never seen a report of anyone having problems with Ted's cables doesn't nean there won't be a first time).

[halleyscomet8]

http://www.gracedesign.com/

i would contact grace if i were you, and seek advice from them.

[tapinfool]

http://www.gracedesign.com/

i would contact grace if i were you, and seek advice from them.

doing that now

thanks guys

[stevetoney]

Make sure polarity wasn't accidentally soldered up ass-backwards on the cable.

You can figure this out by checking the pin assignments on the XLR power connector...should be shown in the manual I'd think.  Use a multi-meter to verify you have continuity between the pin that's supposed to be connected to '+' and the positive terminal on your battery.  If it's not, get the soldering iron out and swap the leads.

[Javier Cinakowski]

I don't think it is the cable.  We had an older 4-pin that we tried too, no luck... 

I suspect Grace will tell him if it is something simple or it needs to be sent in, or returned to the seller, for that matter....

[ero3030]

looks like the v2 uses the 12v pin assignment. 1 and 4.  deff check that first.  ed

[H₂O]

For the V2, I am pretty sure the pin out is actually:
Pin 1,2 (jumpered together) = -
Pin 3,4 (jumpered together) = +

It will take 6V or 12V the only difference is the internal pots, jumpers (just as in the V3) - which control the low power flashing LED and auto shutoff.

If you have the pots and jumpers set to 6V and feed it  a 12V signal it will work fine, other way around and it may not turn on. If it has been set to 12V then you will need to feed it somewhere over 10.8V or so to get it to turn on.

See:
http://www.gracedesign.com/support/v2_voltage_calibration_procedure.html

Also as said above check the polarity.

[F.O.Bean]

I have NEVER heard of a problem w/ a Grace preamp. Maybe its the cable Ted made?

And what show was 2nite

[Todd R]

I'd agree with a lot of what has been said here.

Step 1:  make sure the internal jumper switches haven't been set to 12v operation, which might be the case regardless of the tag on back.  The V2 manual can be found here:

http://taperssection.com/index.php?topic=37956.0

Step 2: Get a digital multimeter (can get one from Radioshack for about $25) and be sure that your battery hooked up through your battery cable gives you the proper voltage (should be gnd on pin 1, +V on pin 3 or 4, iirc)

If the V2 is set to 6v operation and you're getting 6V (or 9V from the DVD battery) through your battery cable to the proper pins on the XLR end of the battery cable, then if it still isn't working when you have made sure it is getting the proper voltage....

Step 3:  Return it back to the seller or send it off to Grace

[tapinfool]

I'd agree with a lot of what has been said here.

Step 1:  make sure the internal jumper switches haven't been set to 12v operation, which might be the case regardless of the tag on back.  The V2 manual can be found here:

http://taperssection.com/index.php?topic=37956.0

Step 2: Get a digital multimeter (can get one from Radioshack for about $25) and be sure that your battery hooked up through your battery cable gives you the proper voltage (should be gnd on pin 1, +V on pin 3 or 4, iirc)

If the V2 is set to 6v operation and you're getting 6V (or 9V from the DVD battery) through your battery cable to the proper pins on the XLR end of the battery cable, then if it still isn't working when you have made sure it is getting the proper voltage....

Step 3:  Return it back to the seller or send it off to Grace

thanks to everyone that helped out 

i took the following actions this evening:

1. confirmed jumpers set @ 6V. i did side by side comparison with V2 #087 (a team pgh members V2) and the V2 diagram.

2. a. confirmed with multimeter my battery and cable are fully functional (thanks again to Ted G for a superb cable )
    b. tested V2 #087 with my battery/cable. my battery and cable work perfectly.
    c. tested my V2 #126 with different battery and cable from V2 # 087. still no power.

3. contacting seller tomorrow for acceptable solution.

[jbell]

Bummer  !  Hopefully the seller makes it right.  There is another V2 in the YS.

[WiFiJeff]

Is the power connector on the V2 like the one on the V3?  If so, this could be the issue.  The V3 power center post is split and over time the halves bend together and finally fail to make a contact.  You have to stick s screw driver blade between the halves and bend them carefully back.  There is even a page on the Grace site that shows how to do a slightly more permanent fix.

Jeff