ed
New Member
Posts: 1
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Post by ed on Jan 23, 2023 11:09:14 GMT -7
Hello Everyone, am new to this forum, I have an EMS that I got from PEACH GUITARS UK that is faulty, (after a year of joy) the problem is after about 20 mins of playing I get a hum that becomes louder to the point of white noise with crackles pops hisses etc it becomes unplayable, I have taken this to a very respected local amp tech who did all warranty work on Matchless UK a few years back he thinks he's fixed it three times already, I am about to go back a fourth time, I should add the same thing happens every time I get it back after 20 mins.. there is another EMS owner with a similar problem, help pls as I love this amp. thank you Ed
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Post by Jaguarguy (Mike) on Jan 23, 2023 12:05:24 GMT -7
Maybe you want to go to another tech??? They don't seem to be able to fix it for you Any reason you didn't take it back to Peach???
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Post by pcns on Jan 23, 2023 12:21:40 GMT -7
maybe check in with Peach and see if they recommend a tech to try
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Post by DRZ on Jan 23, 2023 12:51:11 GMT -7
Ed , sorry to hear about your issue. After a year of working I can't suspect its a manufacturing problem, most likely after heating up an output tube is getting flaky. That is the symptom you would get with a bad EL 34 on a EMS. Can you list what your tech has done so far ? If you could make an audio recording that would help in the diagnosis . Also have your tech contact Don - repairs@drzamps.com for some assistance . I would think Peach would help as well.
DR.Z
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Post by adam on Jan 23, 2023 17:25:02 GMT -7
Sorry about your issues too. Peach seems like a really reputable place that does a lot of business. I'd be inclined to ask for their input too. Mine has been rock solid, like the other 9 or so Z's. I do have a theory though... Assume the tech biased the amp every time it was in. Maybe the tech thinks the amp sounds better biased on the high side (maybe it does). He sets the bias while his wall voltage is whatever voltage lower than wherever you are playing the amp. I would check your wall voltage, ask the tech what his wall voltage is, and then maybe something is in that. I say that because it happened to me time and time again with a Trace Elliot amp, except that amp would just blow up after say 8 hours of use until I figured it out. My wall voltage is really high and I run a voltage regulator in my main room, and just a variac in room 2.
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Post by Paul (TRANE) on Jan 23, 2023 18:11:50 GMT -7
Sorry about your issues too. Peach seems like a really reputable place that does a lot of business. I'd be inclined to ask for their input too. Mine has been rock solid, like the other 9 or so Z's. I do have a theory though... Assume the tech biased the amp every time it was in. Maybe the tech thinks the amp sounds better biased on the high side (maybe it does). He sets the bias while his wall voltage is whatever voltage lower than wherever you are playing the amp. I would check your wall voltage, ask the tech what his wall voltage is, and then maybe something is in that. I say that because it happened to me time and time again with a Trace Elliot amp, except that amp would just blow up after say 8 hours of use until I figured it out. My wall voltage is really high and I run a voltage regulator in my main room, and just a variac in room 2. Great points there Adam. I had high voltage and odd experiences with pedals acting noisy and just odd. I had a main breaker die recently. The electrician noticed our panel was wired... UH.... UNIQUELY. He pointed it out and said that the wiring could cause instability and such. He replaced the dead breaker and wired the panel to code. Voltage is now normal and stable and no odd artifacts with my gear since that. Now I wonder how some of those old "noisy" pedals would sound now.
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