Members Slaymoar Posted September 18, 2008 Members Share Posted September 18, 2008 kinda makes you wonder why they charge 1899 1899 for a new one Exactly for that ... :poke:-D Link to comment Share on other sites More sharing options...
Members petejt Posted September 19, 2008 Author Members Share Posted September 19, 2008 Wow... I think it sucks that you have to deal with "toutchy" people on top of the amp being in the OR.The foil in the capacitor might of created shorts in the amplifier, causing other components to also fry. Capacitors do not usually go flying with a whole lot of charge. When they blow, that energy is what causes the 'explosion'.I just don't see it becomming a molten mess in there. The fuse should of blown, or something would of openened. -D I was told he was very touchy, so I was careful with him & his company. But to me he was pretty cool & easy going. The amp is definitely intact. I guess I won't fully know how bad it was until I see the photos. Link to comment Share on other sites More sharing options...
Members petejt Posted September 19, 2008 Author Members Share Posted September 19, 2008 Aw {censored} man, I just saw this thread. That sucks. I hate to hear that, I liked that amp a lot too. To let you know, the Cost of shipping that sucker was $450 through fed ex, so you could be looking at a large shipping bill. I don't know how much it would be to send it post, but there is no tracking and they aren't very careful with their stuff, but if it's that or a complete write off it it may be worth it. I'd also call Mesa to see how much it would be for a replacement board fully loaded shipped to you and you could have your tech wire it up. Just see what your options are. Thanks Rob. Yeah in fact it was the tech's idea to order a replacement board from Mesa/Boogie and then he'll wire it up. I think that might be the only way. I think at the same time, if it all comes to under $1000, I'll get it fully revalved rather than just change V1. Link to comment Share on other sites More sharing options...
Members mick8882003 Posted September 19, 2008 Members Share Posted September 19, 2008 If this ends up costing more than 500 bucks id be calling consumer affairs. I could get a new circuit board for thirty bucks, take out all the good parts from the old pcb, load them up, say another 100 bucks for the crispy ones and your pretty much done. Would take about three hours work. 3*75 = 230. 400 bucks is generous man. This bloke is robbing ya, take it someone who knows what they are doing, or at least get a second quote. You would get a second opinion from a doctor if it was serious no? Link to comment Share on other sites More sharing options...
Members petejt Posted September 19, 2008 Author Members Share Posted September 19, 2008 ^^ Yeah I know what you mean. Good point. I'm not sure how much the new board would cost, as the MarkIV has a pretty complex circuit. That would probably cost the most especially from Mesa/Boogie. Link to comment Share on other sites More sharing options...
Members mick8882003 Posted September 19, 2008 Members Share Posted September 19, 2008 I used to work as an electronic technician mate, trust me, get a circuit diagram and send it off to a cct board manufacturer, any one on the net would be fine 40 bucks tops it would only cost you a few bucks if you where ordering like ten thousand, but since you only want one its going to be heaps more expensive. Just make sure you order the right thickness of the cct board, something tells me it will be thicker than typical Where in Aus are you? I am tempted to fix it myself for you. Link to comment Share on other sites More sharing options...
Members Slaymoar Posted September 19, 2008 Members Share Posted September 19, 2008 I get a circuit diagram and send it off to a cct board manufacturer, 40 bucks tops So where does he get that diagram? And how does he go about getting it manufactured? -D Link to comment Share on other sites More sharing options...
Members OverDriven Posted September 19, 2008 Members Share Posted September 19, 2008 I used to work as an electronic technician mate, trust me, get a circuit diagram and send it off to a cct board manufacturer, any one on the net would be fine Even authorized Mesa techs cannot get circuit diagrams. Mesa keeps this under tight lock and key. Trust me there is NO WAY you are getting your hands on that...specially for a Mark series. Also, I've never once heard of an amp tech doing that. While I agree that the price is a rip off, usually they will order a new, pre-populated board from the amp manufacturer if the board is really completely destroyed. I highly doubt it is though. Pete, why would you bring it to a tech that is said to have a bad attitude? Link to comment Share on other sites More sharing options...
Members IbzSZ Posted September 19, 2008 Members Share Posted September 19, 2008 $1000 was just a ballpark extreme figure. It might just be $500, we won't know until the amp gets opened right up, and each individual problem fixed then the amp closed up again and tested, and repeat, and repeat etc. And those little things are packed together mighty tightly. You can't just leave them open while testing them like big Marshall-like amps.I don't want to take the risk of sending this amp overseas. I bought it from Rob S. ("Mr. Brady") who went to the effort of packing it inside a specially-constructed wooden box, to ensure it was safe even from the stray forklift forks of Fedex.And because of that, that's also why I don't want to buy another amp from overseas. I was lucky once, but I'm not so sure if it will happen again. How much did it cost ou to ship to your doorstep? Link to comment Share on other sites More sharing options...
Members mick8882003 Posted September 19, 2008 Members Share Posted September 19, 2008 Even authorized Mesa techs cannot get circuit diagrams. Mesa keeps this under tight lock and key. Trust me there is NO WAY you are getting your hands on that...specially for a Mark series.Also, I've never once heard of an amp tech doing that. While I agree that the price is a rip off, usually they will order a new, pre-populated board from the amp manufacturer if the board is really completely destroyed. I highly doubt it is though.Pete, why would you bring it to a tech that is said to have a bad attitude? Ok, not cct diagram, draw it out, simple. Link to comment Share on other sites More sharing options...
Members Slaymoar Posted September 19, 2008 Members Share Posted September 19, 2008 draw it out, simple.LOL!!! -D Link to comment Share on other sites More sharing options...
Members OverDriven Posted September 19, 2008 Members Share Posted September 19, 2008 Ok, not cct diagram, draw it out, simple.Draw it out!? It's a friggin Mark IV! Link to comment Share on other sites More sharing options...
Members mick8882003 Posted September 19, 2008 Members Share Posted September 19, 2008 What for f*cks sake, the cct board is right there, just draw the cct diagram off the cct board. Techs do it all the time. Link to comment Share on other sites More sharing options...
Members mick8882003 Posted September 19, 2008 Members Share Posted September 19, 2008 Draw it out!? It's a friggin Mark IV! oh yea and you don't think they have drawings of the space shuttle, {censored} its not the space shuttle. Link to comment Share on other sites More sharing options...
Members Slaymoar Posted September 19, 2008 Members Share Posted September 19, 2008 oh yea and you don't think they have drawings of the space shuttle, {censored} its not the space shuttle. You have to consider that most people are not very circuit litterate and do not know how to draw it properly. It would take me a while to draw a proper diagram of the circuit, and I built my own amp (dual recto). Imagine somebody who's experience extends to changing tubes! Its a good idea though to get it sketched though. -D Link to comment Share on other sites More sharing options...
Members petejt Posted September 20, 2008 Author Members Share Posted September 20, 2008 What for f*cks sake, the cct board is right there, just draw the cct diagram off the cct board.Techs do it all the time. It's quite a complex circuit, not to mention packed in rather tight. Link to comment Share on other sites More sharing options...
Members Pablo Jose Posted September 20, 2008 Members Share Posted September 20, 2008 Sorry dude, I had to hold back in this thread. It's pretty simple. You are in Aus, you take the amp to 87-89 Gladstone Street Fyshwick. If what you say is true (and Boogie have read this) it is faulty manufacturing. I'm sure you are a nice guy but there is too much bull{censored} in this thread. Link to comment Share on other sites More sharing options...
Members Zachman Posted September 21, 2008 Members Share Posted September 21, 2008 Sorry dude, I had to hold back in this thread. It's pretty simple. You are in Aus, you take the amp to 87-89 Gladstone Street Fyshwick. If what you say is true (and Boogie have read this) it is faulty manufacturing. I'm sure you are a nice guy but there is too much bull{censored} in this thread. Not necessarily... IF it was the cap going bad... Caps have 10-15 year shelf life, and may have been a supplier issue not a manufacturing one. IF a Power tube had a hard short, he may have shot his grid resistors and/likely anode and cathodes, which again wouldn't be Mesa's fault. Link to comment Share on other sites More sharing options...
Members Pablo Jose Posted September 21, 2008 Members Share Posted September 21, 2008 Point taken Zach, but there are 2 threads about it as a quest for a quick fix. Link to comment Share on other sites More sharing options...
Members Zachman Posted September 21, 2008 Members Share Posted September 21, 2008 Point taken Zach, but there are 2 threads about it as a quest for a quick fix. Ya... the idea that a tech is going to map out the PC traces on a board that has a hole burnt in it doesn't appear to be the most efficient/likely way to get the board working/replaced. The guy should order a new board from Boogie, IMO-- and I would have another tech beside the guy he's been talking to--install it. Link to comment Share on other sites More sharing options...
Members ZCat Posted September 21, 2008 Members Share Posted September 21, 2008 I had a Lonestar {censored} up , burnt resistors {censored}ed up the board. I had it repaired, they dug out all the carbon and filled in with epoxy. The amp works, but it doesn't sound like it used to. Link to comment Share on other sites More sharing options...
Members mick8882003 Posted September 21, 2008 Members Share Posted September 21, 2008 I remember the good old days, where you could find the circuit diagram of every tv inside the tv itself, usually attached inside the back of the tv. Link to comment Share on other sites More sharing options...
Members mick8882003 Posted September 21, 2008 Members Share Posted September 21, 2008 Another option is to get another mark iv, exactly the same as your and copy the circuit diagram from that. (if you know a tech with a few amp in his storeroom this is quite easy done.) This has been done by many a tech as well. Link to comment Share on other sites More sharing options...
Members sled Posted September 21, 2008 Members Share Posted September 21, 2008 can you put up pics of the fault. I'm guessing it's a pretty jam packed PCB, but I've fixed numerous PCBs where the traces have melted. are several traces gone or just one or two? Link to comment Share on other sites More sharing options...
Members trey85stang Posted September 21, 2008 Members Share Posted September 21, 2008 Ok, not cct diagram, draw it out, simple.please find one and draw it out for us. While you're at it, go ahead and document all the resistors and caps and circuit.you would be an interweb hero if you did that for us Link to comment Share on other sites More sharing options...
Recommended Posts
Archived
This topic is now archived and is closed to further replies.