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#1
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Amp powers up, but no output.
Eltax avr 250
Please can somebody reply? somebody must have an idea about what the problem could be. Eltax.com was no help, just told me it was possibly defective. DUH. its just gone dead, lights up !! one of the speaker level indicators is on max tried resetting but no good, had an electrical engineer friend look at it, he checked fuses. Couldn`t see anything obvious. Checked all the speaker wiring too. Any ideas about the problem? Saw another post the same as this, but the guy just bought a new amp. |
#2
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B A T M A N wrote:
Eltax avr 250 Please can somebody reply? somebody must have an idea about what the problem could be. Eltax.com was no help, just told me it was possibly defective. DUH. its just gone dead, lights up !! one of the speaker level indicators is on max tried resetting but no good, had an electrical engineer friend look at it, he checked fuses. Couldn`t see anything obvious. Checked all the speaker wiring too. Any ideas about the problem? Saw another post the same as this, but the guy just bought a new amp. Never heard of this brand. (Most of us on this group are Americans) Generally, these faults fall into the following categories: 1. No actual problem, such as: speaker switch turned off, tape monitor button engaged, wrong source selected, fault in another component. 2. Protection circuit related, either a fault in the protection circuit itself, or in a monitored circuit, like the amp or power supply. Blown amp channels are fairly common, with shorted output transistors or IC's. Mark Z. |
#3
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Mark D. Zacharias wrote:
B A T M A N wrote: Eltax avr 250 Please can somebody reply? somebody must have an idea about what the problem could be. Eltax.com was no help, just told me it was possibly defective. DUH. its just gone dead, lights up !! one of the speaker level indicators is on max tried resetting but no good, had an electrical engineer friend look at it, he checked fuses. Couldn`t see anything obvious. Checked all the speaker wiring too. Any ideas about the problem? Saw another post the same as this, but the guy just bought a new amp. Never heard of this brand. (Most of us on this group are Americans) Generally, these faults fall into the following categories: 1. No actual problem, such as: speaker switch turned off, tape monitor button engaged, wrong source selected, fault in another component. 2. Protection circuit related, either a fault in the protection circuit itself, or in a monitored circuit, like the amp or power supply. Blown amp channels are fairly common, with shorted output transistors or IC's. Mark Z. I am thinking it could be more likely related to number 2. Eltax is a well known European manufacterer, more popular for their speakers. |
#4
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B A T M A N wrote:
Mark D. Zacharias wrote: snip 2. Protection circuit related, either a fault in the protection circuit itself, or in a monitored circuit, like the amp or power supply. Blown amp channels are fairly common, with shorted output transistors or IC's. Mark Z. I am thinking it could be more likely related to number 2. Eltax is a well known European manufacterer, more popular for their speakers. So is this a surround receiver? How old? What exactly is the symptom? Speaker relay won't come on but no error messages on display (assuming it's a recent model)? Some troubleshooting is going to be required. Have you any technical skill (using a voltmeter, 'scope, etc)? Mark Z. |
#5
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Mark D. Zacharias wrote:
B A T M A N wrote: Mark D. Zacharias wrote: snip 2. Protection circuit related, either a fault in the protection circuit itself, or in a monitored circuit, like the amp or power supply. Blown amp channels are fairly common, with shorted output transistors or IC's. Mark Z. I am thinking it could be more likely related to number 2. Eltax is a well known European manufacterer, more popular for their speakers. So is this a surround receiver? How old? What exactly is the symptom? Speaker relay won't come on but no error messages on display (assuming it's a recent model)? Some troubleshooting is going to be required. Have you any technical skill (using a voltmeter, 'scope, etc)? Mark Z. Original post inserted but snipped Eltax avr 250 Eltax.com was no help, just told me it was possibly defective. Its just gone dead, lights up !! one of the speaker level indicators is on max tried resetting but no good, had an electrical engineer friend look at it, he checked fuses. Couldn`t see anything obvious. Checked all the speaker wiring too. Any ideas about the problem? Saw another post the same as this, but the guy just bought a new amp. Troubleshooting done as above by a friend with volt meter who is an electrical engineer on gaming machines and jukeboxes, IT boxes etc. I myself only have knowledge what I have read up on. No practical. The relays all seem to work fine, none sticking. I dont intend doing any work on it myself, my friend won`t touch anything he aint 100% sure of either. Like he says, normally an engineer would just fit it all up on a test bench and run a low voltage through it to do a diagnostics. I would just rather understand the fault, so I would know, what the problem was, to prevent the same happenning again when a working AVR is in place, and to make sure I aint ripped off if I manage to get it repaired. |
#6
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"B A T M A N" wrote in message ... Eltax avr 250 Please can somebody reply? somebody must have an idea about what the problem could be. Eltax.com was no help, just told me it was possibly defective. DUH. its just gone dead, lights up !! one of the speaker level indicators is on max tried resetting but no good, had an electrical engineer friend look at it, he checked fuses. Couldn`t see anything obvious. Checked all the speaker wiring too. Any ideas about the problem? Saw another post the same as this, but the guy just bought a new amp. Their comment that it was defective was pretty much spot on. If you explained to them about the level indicator they may have been able to elaborate that one channel was oscillating - that is obvious. Your engineer friend should have been able to tell you that in a couple of seconds. It is defective. You need to get it fixed - not over the internet , but by an experienced electronic serviceman. geoff |
#7
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Geoff Wood wrote:
"B A T M A N" wrote in message ... Eltax avr 250 Please can somebody reply? somebody must have an idea about what the problem could be. Eltax.com was no help, just told me it was possibly defective. DUH. its just gone dead, lights up !! one of the speaker level indicators is on max tried resetting but no good, had an electrical engineer friend look at it, he checked fuses. Couldn`t see anything obvious. Checked all the speaker wiring too. Any ideas about the problem? Saw another post the same as this, but the guy just bought a new amp. Their comment that it was defective was pretty much spot on. If you explained to them about the level indicator they may have been able to elaborate that one channel was oscillating - that is obvious. Your engineer friend should have been able to tell you that in a couple of seconds. It is defective. You need to get it fixed - not over the internet , but by an experienced electronic serviceman. geoff Its at a repair shop now, understanding the problem was my aim over the net, hence posting in a tech discussion group. |
#8
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Geoff Wood wrote:
Their comment that it was defective was pretty much spot on. If you explained to them about the level indicator they may have been able to elaborate that one channel was oscillating - that is obvious. Your engineer friend should have been able to tell you that in a couple of seconds. Oscillating? Far from obvious. More likely that one output transistor is shorted and the level indicator is measuring a power rail. -- Eiron. |
#9
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B A T M A N wrote:
Mark D. Zacharias wrote: B A T M A N wrote: Mark D. Zacharias wrote: snip 2. Protection circuit related, either a fault in the protection circuit itself, or in a monitored circuit, like the amp or power supply. Blown amp channels are fairly common, with shorted output transistors or IC's. Mark Z. I am thinking it could be more likely related to number 2. Eltax is a well known European manufacterer, more popular for their speakers. So is this a surround receiver? How old? What exactly is the symptom? Speaker relay won't come on but no error messages on display (assuming it's a recent model)? Some troubleshooting is going to be required. Have you any technical skill (using a voltmeter, 'scope, etc)? Mark Z. Original post inserted but snipped Eltax avr 250 Eltax.com was no help, just told me it was possibly defective. Its just gone dead, lights up !! one of the speaker level indicators is on max tried resetting but no good, had an electrical engineer friend look at it, he checked fuses. Couldn`t see anything obvious. Checked all the speaker wiring too. Any ideas about the problem? Saw another post the same as this, but the guy just bought a new amp. Troubleshooting done as above by a friend with volt meter who is an electrical engineer on gaming machines and jukeboxes, IT boxes etc. I myself only have knowledge what I have read up on. No practical. The relays all seem to work fine, none sticking. I dont intend doing any work on it myself, my friend won`t touch anything he aint 100% sure of either. Like he says, normally an engineer would just fit it all up on a test bench and run a low voltage through it to do a diagnostics. I would just rather understand the fault, so I would know, what the problem was, to prevent the same happenning again when a working AVR is in place, and to make sure I aint ripped off if I manage to get it repaired. You had an electrical engineer 'hands on' look at it. You, yourself, have no knowledge of electronics. What help do you really expect to get from a newsgroup? jak |
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