Schematic for 2007 Shiva?

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Tone Meister

Tone Meister

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I'm having a time getting my Shiva back up and running after a UPS shipping debacle. Now it has a weird scratching sound coming from the amp even with all knobs off and the reverb tank unplugged. The sound is similar to a scratchy pot, but my tech thinks it is coming from the switch mode power supply. He says it sounds to him like a capacitor charging and discharging.

Problem is, even though the tech is factory certified in more than 35 high-end brands, Bogner refused to: 1) send him a schematic, 2) discuss the issue with him from a technical standpoint, 3) provide details on how he can become certified to work on Bogner amps.

Does anyone know where to purchase or download a schematic for the 2007 Shiva with reverb?

Thanks in advance!

-Stan
 
Tone Meister":2oc6mrt2 said:
Problem is, even though the tech is factory certified in more than 35 high-end brands, Bogner refused to: 1) send him a schematic, 2) discuss the issue with him from a technical standpoint, 3) provide details on how he can become certified to work on Bogner amps.
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Good luck on your search. I'm surprised to hear that; I talked with Bogner a year ago when I thought my 101b had an issue (turned out to be a Mesa cab shorting out and messing up the impedance) and they said if I brought it to a tech, they'd be happy to walk him through troubleshooting. Have you personally contacted Bogner or is that the information your tech gave you?

If all else fails, you can always send your amp directly to them, albeit more expensive. Hell, UPS should be paying for it right?
 
I've spoken with the head tech, Charlie Polachek, there at least four times now, twice yesterday (6/7/10). It was Bogner who suggested I seek a local repair to save shipping and reduce the risk of further damage. Mr. Polachek and my tech were in an email exchange late yesterday, but it appears quite certain that even a partial schematic is out of the question. He did offer to put my tech in touch with one of their techs, but my tech was not impressed. Here is an excerpt from an email my tech sent me:

... Hummm … Exactly my point … no available schematics, lucky guessing and stabbing in the dark with the tech … not a professional amp company in my opinion ...


I am at a loss here because it does seem that my only option at this point is to send it to Bogner, even though Bogner strongly recommended having it repaired locally.
 
BTW, yes, the repair bill should be footed by UPS. However, UPS claims keyed on Bogner's recommendation to seek a local repair and as a result their remittance probably won't even cover shipping one way to Bogner, much less the cost of repair. Certainly I am crossing UPS off my vendor list and possibly Bogner if we can't reach a reasonable solution soon. The Shiva is just one of several high end amps I own so it really wouldn't be missed if I decide to shelve it. It isn't THAT good ...
 
Ive had nothing but great service from bogner over the years, but it has been 3 since I owned one. Greg V at Bogner, or Reinhold himself. I know those two guys are great at taking care of customers. I can understand not wanting to share the schematic, but don't undestand why they told you to have a local tech fix it
 
Rumor has it that Bogner is now owned by Line 6. If that's the case, then all of this becomes easily understandable. I too have owned 3 Bogners over the years: a 101B, a Metropolis, and the Shiva. Never had any need for service until now, but I am NOT impressed. The head tech at Bogner suggested a local repair when I called for an RA number. I guess he must have hoped it was a retube and nothing more. My tech simply is not willing to take a pin the tail on the donkey approach and I completely agree with him.
 
Tone Meister":2fvioaqu said:
Rumor has it that Bogner is now owned by Line 6. If that's the case, then all of this becomes easily understandable. I too have owned 3 Bogners over the years: a 101B, a Metropolis, and the Shiva. Never had any need for service until now, but I am NOT impressed. The head tech at Bogner suggested a local repair when I called for an RA number. I guess he must have hoped it was a retube and nothing more. My tech simply is not willing to take a pin the tail on the donkey approach and I completely agree with him.
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Trust whomever you wish, but every time I've called Bogner they have done absolutely everything to make me happy. I've been having concerns over ch. 1 on my Twin Jet and asked for a resistor value. They said they couldn't give it out, but offered to - if I paid for shipping - get everything up to their current specs and make sure it left their doors 100% perfect, plus include a t-shirt, free of charge. In my book, that's great service.

I think your tech doesn't understand that they're amazing at troubleshooting, and that they would probably - over the phone - find the problem within 10 minutes. I really don't see what the big deal is, honestly; it's not a "pin the tail on the donkey" approach at all since Bogner would be guiding him. They don't want their design to be ripped off, and I think it's unfortunate that you're having a bad experience, but it seems to be in Bogner's best interest not to let their designs leak. I respect that.

Unless I'm something has changed very recently, Bogner's Custom Shop has nothing to do with Line6. The Alchemist is manufactured and distributed by Line6 though; AFAIK, that's the only connection.
 
Ugh. This thread is kinda ridiculous.

First of all, they are NOT owned by Line 6.

Second, I've always had incredible service over the phone, for any of my stupid questions. I've got parts numbers and values for making a custom footswitch, tube reccomendations, you name it.

Third. Why would you be surprised that one of the world's premier boutique amp manufacturers isn't willing to divulge full schematics? It only makes sense to me. Bogner is protecting their intellectual property. Having a Bogner tech walk thru the amp, over the phone, with your local tech, seems like more than a fair compromise.

Every "modded marshall" type amp has their own secret recipe. And Bogner is attempting to keep it that way. No harm in that.
 
RockStarNick":1uch906u said:
Ugh. This thread is kinda ridiculous.

First of all, they are NOT owned by Line 6.

Second, I've always had incredible service over the phone, for any of my stupid questions. I've got parts numbers and values for making a custom footswitch, tube reccomendations, you name it.

Third. Why would you be surprised that one of the world's premier boutique amp manufacturers isn't willing to divulge full schematics? It only makes sense to me. Bogner is protecting their intellectual property. Having a Bogner tech walk thru the amp, over the phone, with your local tech, seems like more than a fair compromise.

Every "modded marshall" type amp has their own secret recipe. And Bogner is attempting to keep it that way. No harm in that.
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Ridiculous thread? I think not. To reverse engineer this amp would be child's play for my tech, IF he wanted to infringe on Bogner's intellectual property, which he does not. What he prefers to do is repair the amp, professionally and efficiently, in the least amount of time at the least expense to me as possible, which should be his goal.

Read the thread, particularly the second paragraph of post #1, THEN comment ... please.
 
Tone Meister":8lna07q5 said:
RockStarNick":8lna07q5 said:
Ugh. This thread is kinda ridiculous.

First of all, they are NOT owned by Line 6.

Second, I've always had incredible service over the phone, for any of my stupid questions. I've got parts numbers and values for making a custom footswitch, tube reccomendations, you name it.

Third. Why would you be surprised that one of the world's premier boutique amp manufacturers isn't willing to divulge full schematics? It only makes sense to me. Bogner is protecting their intellectual property. Having a Bogner tech walk thru the amp, over the phone, with your local tech, seems like more than a fair compromise.

Every "modded marshall" type amp has their own secret recipe. And Bogner is attempting to keep it that way. No harm in that.
Click to expand...

Ridiculous thread? I think not. To reverse engineer this amp would be child's play for my tech, IF he wanted to infringe on Bogner's intellectual property, which he does not. What he prefers to do is repair the amp, professionally and efficiently, in the least amount of time at the least expense to me as possible, which should be his goal.

Read the thread, particularly the second paragraph of post #1, THEN comment ... please.
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I totally missed detail #2 in your 2nd paragraph of your first post. My apologies Stan!

I really hope you get this issue worked out. The Shiva is a great amp.
 
It's all good, no hard feelings here! The tech is getting it sorted out as we speak. The Bogner people have been great to me over the phone and seem quite sincere, but my tech is experiencing a very different relationship with them. He'll figure it out, I'm sure, but not as efficiently as he would with just a partial schematic, which Charlie PROMISED to me he would make available but did NOT. It would cost me $250 for a round trip to send the amp back to Bogner, risking further shipping damage. This has gone on far too long, IMHO.

Peace! :thumbsup:
 
Just got an email from the tech. He reverse engineered the suspect section of the circuit and found an out-of spec resistor responsible for biasing the preamp section. Not a UPS issue after all, simple component failure.

Crackle is gone, amp is ready to pick up, all with NO help from Bogner whatsoever. Love the Bogner amps, but the customer service is a tad disappointing based on this experience.
 
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