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Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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#1
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Need Marantz 1250 repaired in Pittsburgh area.
I had a loyal client move from Southern California to Pittsburgh. She has a
Marantz 1250 power amp. I serviced it a few times for intermittent popping noises and signal drop outs. She called and says now it has developed a constant hum (audio still works). Shipping the amp back to me would be quite costly so I was wondering if anybody could recommend someone in the Pittsburgh neighborhood for hopefully an uncomplicated repair. Thanks for your reply. -- David Farber David Farber's Service Center L.A., CA |
#2
Posted to sci.electronics.repair
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Need Marantz 1250 repaired in Pittsburgh area.
"David Farber" wrote in message ... I had a loyal client move from Southern California to Pittsburgh. She has a Marantz 1250 power amp. I serviced it a few times for intermittent popping noises and signal drop outs. She called and says now it has developed a constant hum (audio still works). Shipping the amp back to me would be quite costly so I was wondering if anybody could recommend someone in the Pittsburgh neighborhood for hopefully an uncomplicated repair. Thanks for your reply. **1250? Do you mean 250? The old US made thing? Trevor Wilson |
#3
Posted to sci.electronics.repair
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Need Marantz 1250 repaired in Pittsburgh area.
"Trevor Wilson" wrote in message ... "David Farber" wrote in message ... I had a loyal client move from Southern California to Pittsburgh. She has a Marantz 1250 power amp. I serviced it a few times for intermittent popping noises and signal drop outs. She called and says now it has developed a constant hum (audio still works). Shipping the amp back to me would be quite costly so I was wondering if anybody could recommend someone in the Pittsburgh neighborhood for hopefully an uncomplicated repair. Thanks for your reply. **1250? Do you mean 250? The old US made thing? Trevor Wilson No, it is definitely a 1250, another old US made (I think) amp. The date on the service manual fiche I have is 1976. I found this pic on the web: http://www.classic-audio.com/marantz/pics/1250.jpg Thanks for your reply. -- David Farber David Farber's Service Center L.A., CA |
#4
Posted to sci.electronics.repair
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Need Marantz 1250 repaired in Pittsburgh area.
"David Farber" wrote in message ... "Trevor Wilson" wrote in message ... "David Farber" wrote in message ... I had a loyal client move from Southern California to Pittsburgh. She has a Marantz 1250 power amp. I serviced it a few times for intermittent popping noises and signal drop outs. She called and says now it has developed a constant hum (audio still works). Shipping the amp back to me would be quite costly so I was wondering if anybody could recommend someone in the Pittsburgh neighborhood for hopefully an uncomplicated repair. Thanks for your reply. **1250? Do you mean 250? The old US made thing? Trevor Wilson No, it is definitely a 1250, another old US made (I think) amp. The date on the service manual fiche I have is 1976. I found this pic on the web: http://www.classic-audio.com/marantz/pics/1250.jpg Thanks for your reply. **I don't have the manual for that model, but it is definitely Japanese made. I suspect it uses the output stages from the 2325 receiver. The popping noises are probably (if it is confined to the power amp) related to the varistors on the heat sinks. These were notoriously unreliable at the time in the 2325. Trevor Wilson |
#5
Posted to sci.electronics.repair
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Need Marantz 1250 repaired in Pittsburgh area.
"Trevor Wilson" wrote in message ... "David Farber" wrote in message ... "Trevor Wilson" wrote in message ... "David Farber" wrote in message ... I had a loyal client move from Southern California to Pittsburgh. She has a Marantz 1250 power amp. I serviced it a few times for intermittent popping noises and signal drop outs. She called and says now it has developed a constant hum (audio still works). Shipping the amp back to me would be quite costly so I was wondering if anybody could recommend someone in the Pittsburgh neighborhood for hopefully an uncomplicated repair. Thanks for your reply. **1250? Do you mean 250? The old US made thing? Trevor Wilson No, it is definitely a 1250, another old US made (I think) amp. The date on the service manual fiche I have is 1976. I found this pic on the web: http://www.classic-audio.com/marantz/pics/1250.jpg Thanks for your reply. **I don't have the manual for that model, but it is definitely Japanese made. I suspect it uses the output stages from the 2325 receiver. The popping noises are probably (if it is confined to the power amp) related to the varistors on the heat sinks. These were notoriously unreliable at the time in the 2325. Trevor Wilson Trevor, I think you're missing the point here. I am looking for someone in the Pittsburgh neighborhood to service this amp. Any suggestions? Thanks for your reply. -- David Farber David Farber's Service Center L.A., CA |
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