Posted Fri Sep 23, 2011, 10:36am Subject: Re: The Baratza Vario Grinder Owner's Thread
Hi Kim,
I know why they failed, I just didn't put that in my previous post., & I appologize for that.
Here's the answer to me on Wed June 29/11 from Kyle Anderson President of Baratza: Removed pending approval from Kyle. Approved by Kyle on Monday, September 26, 2011 7:14 PM
"HI Craig, R6 is 100 Ohms 5% R7 is 24 Ohms 5% A note of caution: we have found that the cause of R6 and R7 burning up is the left leg (in your picture) of DV2 (the blue disc Varistor). If you look at the solder side of the board, you will likely find the left leg (furthest from R6/R7) where is solders tot he pad on the board will have torn loose. This was a problem with this series of boards resulting from trace spacing requirements of CE for the 230V version of these boards. As a result of minimum trace spacing this pad was made a bit too narrow and is very fragile. If during handling, or mounting of the motor DV2 gets bumped, this pad can tear off. If the pad tears off, then R6/R7 blow immediately. If you replace R6/R7, you will (most likely) need to do a little repair to this pad. Just remove a little of the solder mask on either side of the pad along the trace and apply some solder. The fix should then be much stronger than stock, and be permanent. Let me know if you have any questions about these instructions. Thanks Craig!!! Regards, Kyle"
P.S. Addendum: Added Thurs Mar 15/12 @ 6:15pm. I knew this back on the date Kyle emailed me, but I double checked the values of the resistors R6 & R7 on another good Vario just to be sure., & R7 is not 24 ohms, but 47 ohms. I didn't post to correct this as I figured no one is going to repair their own pcb, but I was in the process of repairing a Vario board earlier today so decided to post the updated information. {;-)
bionic75007 Senior Member Joined: 14 Mar 2011 Posts: 7 Location: DFW Expertise: I love coffee
Espresso: Quick Mill Silvano Grinder: Baratza Vario-W Drip: Technivorm Roaster: Hot Top
Posted Sat Sep 24, 2011, 5:25pm Subject: Re: The Baratza Vario Grinder Owner's Thread
Are you sure the hopper is locked into place? I found the killswitch making sure the hopper was in place to be very stiff on my new Vario-W. After a few iterations of removing/replacing it's a lot better.
bionic75007 Senior Member Joined: 14 Mar 2011 Posts: 7 Location: DFW Expertise: I love coffee
Espresso: Quick Mill Silvano Grinder: Baratza Vario-W Drip: Technivorm Roaster: Hot Top
Posted Sat Sep 24, 2011, 5:27pm Subject: Re: The Baratza Vario Grinder Owner's Thread
kmetzger Said:
The problem has been identified. Pierce Jens, of Baratza, asked me to look at the circuit board. Sure enough, a few of the doodads were scorched. He's sending me a new circuit board.
CrayonShinchan Senior Member Joined: 18 Mar 2011 Posts: 109 Location: San Francisco Bay Area Expertise: I love coffee
Espresso: Izzo Alex Duetto II Grinder: B. Maestro & Vario, Peugeot... Vac Pot: Cona D, Yama Drip: Chemex, V60, Kone,...
Posted Thu Sep 29, 2011, 2:54pm Subject: Re: The Baratza Vario Grinder Owner's Thread
Bob_McBob Said:
I was debating whether to order a Vario-W to play around with for personal interest, so I got out my Vario to pull some shots earlier. Checked the calibration, which was off, so I adjusted it to the point where the motor pitch changes slightly half way up the finest coarse setting. Okay, ready to go!
First shot was too slow. Adjusted the fine setting to 3/4, ran some coffee out, ground and pulled another shot. Still a little slow. Repeat to 7/8, next shot is a crazy gusher. Hmph. Back to 3/4, crazy gusher. Dumped the beans out of the hopper and checked the calibration again, but it seemed to be fine. Started over at 1/2 on the fine setting and got yet another crazy gusher. Then my Duetto's reservoir ran out in the middle of the next shot.
Posted Thu Sep 29, 2011, 4:01pm Subject: Re: The Baratza Vario Grinder Owner's Thread
Sorry Kim, I meant but didn't say., further back in this thread when & where I originally posted to answer you. I had to remove my verbatum email addition from Kyle Anderson at the end of my thread as I didn't have prior permission.
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