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In Reply to: How long is too long in a repair shop? posted by Macncheez on July 4, 2017 at 18:39:45:
Thanks for all the responses to this thread. As it turns out 24 hours after I posted the thread, I called the shop and they said it was ready. The unit being looked over was a McIntosh 7270 power amplifier. I've owned it for 8 years, bought it used and felt that it may need looked at. Funny noise at turn on, one switch (meter control) didn't work correctly, a couple lights out and it was running hotter than I had ever remembered. If I played a couple of cd's at moderte listening levels the amp would be hot to the touch. It even shut down on one occasion due to excess heat. It never used to do that.
The outcome of the 5 week visit to the shop was: verified "low ripple voltage" across main power supply caps, intermittant connection to the left amp board causing noise on left output (repaired), adjusted bias and dc offset, replaced muting jfets, replaced all electrolytic signal caps, replaced lights, deoxed, cleaned, set meters, etc., etc.,
On the parts list were the bad switch, optocouplers replaced on both driver channels, 12 lytic caps, bulbs, a jfet tranny, and a whole lot of "diagnosing". Total bill, $531.37 and as far as I could tell 380.00 was in diagnostics.
The results have been impressive however, I am clearly picking up on the improved tightness/cleanness of the bass and subtle details in the music seem to be more noticeable. Air around the music seems more spacious and there is less congestion as higher volumes. Overall there is a "punch" to the music I felt was missing. Plus the amp can run for hours without sweating now. Worth it? A definite yes and I will say when I got the unit back it was spotless, not sure what they did but it almost looked "waxed".
Now the McIntosh MX117 . . . ugh!
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Topic - How long is too long in a repair shop? - Macncheez 18:39:45 07/04/17 (19)
- RE: How long is too long in a repair shop? - Macncheez 05:07:27 07/09/17 (2)
- Great News - airtime 12:56:11 07/10/17 (0)
- RE: How long is too long in a repair shop? - SgreenP@MSN.com 12:59:03 07/09/17 (0)
- RE: How long is too long in a repair shop? - gordguide 15:12:41 07/06/17 (0)
- general repair: 3 weeks max. /// specialty custom upgrades: 6 months. nt - 3+4=5 13:26:05 07/06/17 (0)
- So I was going to take an old coat to Goodwill.... - viridian 17:19:12 07/05/17 (0)
- When the customer thinks it is. - Ozzie 16:23:10 07/05/17 (0)
- RE: How long is too long in a repair shop? - airtime 12:49:06 07/05/17 (5)
- +1 - djk 14:49:25 07/05/17 (4)
- Why? Do you have alternatives? - Rick W 10:13:46 07/05/17 (0)
- When you have to post that question... - musetap 20:31:50 07/04/17 (0)
- Having worked in several repair shops... - Charles Hansen 19:42:01 07/04/17 (1)
- RE: Having worked in several repair shops... - Sondek 07:05:16 07/05/17 (0)
- a couple weeks at most (nt) - Chip647 19:25:18 07/04/17 (0)
- RE: How long is too long in a repair shop? - Kingshead 19:19:54 07/04/17 (0)