Amp repair cost — is this right?


I recently sent my Musical Fidelity a308cr power amp off to be recapped. This amp is somewhere around 16-18 years old and one of the power caps failed. I contacted Musical Fidelity and sent it to a repair shop they recommended. Today I received an estimate to replace 18 caps, 8 of which are large power caps, resolder the boards, and re-bias the transistors. Basically a full overhaul. The quote I received, including return shipping (prob around $100) Is over $1,300 which possibly exceeds the value of the amp. That doesn’t include the $115 it cost me to ship it out. Having never had an overhaul done on a power amp like this, I’m wondering if anyone with experience can tell me if this sounds right. I guess I was expecting something more like $600-$800 but I don’t know why since I really don’t have a frame of reference. Perhaps it was the assumption it might be 4 hours labor (say $400) plus max $200 for caps. Is $1,300+ on track? Either way I’m going to be out the shipping cost plus a $160 fee paid for the estimate.
jnehma1
In Australia a "reputable repair shop" charges $115-$130aud per hr that $80-$90usd.
Like I said it would take a tech that "cares" about a day to do this properly heat soaked and biased back up. And then there’s the "quality" parts 16 x large power supply caps
https://www.newark.com/cornell-dubilier/381ll682m063a052/cap-6800uf-63v-alu-elec-snap-in/dp/54AH2158...
and around 20 smaller electrolytic caps.
THE PRICE SEEMS FAIR!!!!!!!!!!!!!!!!!
Cheers George



Now George, there you go bringing data in... can't have that.:-)
Surprised how costly those caps are.  I buy them quite a bit "better" but yea, they cost!  And to the above folks talking about "better" caps - by virtue of being new the large 'lytics will work much better.  But we are  talking about electrolytic capacitors. These are not audiophile pretty much by definition - they will be paralleled with much better film type caps (i hope!).  So will it be better?  Than B4, yes.  better than new?  Likely not much, although we can buy larger caps in the same package today, so maybe in that respect. Will it last 20 years?  The ones i did already were 30 years old.
CDE are very good caps.
G


Building my own I am free to use polypropylene power supply capacitors instead which have an unlimited shelf life and do not wear out. For the 1kV power supply to my final stage of SET amplification I use polypropylene capacitors rated at 2400 Volts. It costs little to use overrated components which will not go bad in the future.

Uh, so how much does it cost you and what's the size, using polypropylene film caps, for a modest power supply (remember the OP's amp is solid state) of maybe 2400uF at 600V (for your tube unit). Now think, 50,000uF at 63V (total) for his solid state amp.
I believe some ROM data points will show the impacticaility of this path especially in an existing form factor.
Just some quick estimates - among the most affordable PP caps are Wima.  A 1uF/100V cap is roughly a buck.  Maybe $0.50 in large quantity. (e.g.MKP-10 series).  x 50,000. Math seems simple to me!
Oh they would also be the size of a carry-on suitcase.
G





This is 3-4 hours tops for someone experienced with the equipment and product knowledge. For someone who is not it could be 8 hours though with the right equipment I have no idea how I would spend 8 hours replacing 18 caps. Setting bias takes minutes and you work on something else while it is warming up.  Desoldering a cap, cleaning the holes, and resoldering should be a few minutes per cap. Assembly and disassembly time and overhead for parts ordering packing and unpacking must be considered.

Equivalent or given today's parts better components as pointed out is a few hundred dollars at best.

There is overhead for parts and also overhead costs in case they break it. $800 is reasonable, $1300 isn't. That sounds like a premium price for someone to "figure it out".
Get a second opinion. I've been very happy with HiFi Heaven in Falls Church, VA.

This is why I am very selective in the work I take in, and who I will perform work for. I initially got into doing audio repair as a way to save $$, keep my gear going, maybe pick up nice vintage gear that works otherwise but needs some level of overhaul, or repair to get it going/sounding great again. That morphed into taking in R2R decks, cassette decks, amps, tuners, recaps, calibrations, Setting up tonearms/turntables/cartridges, re-coning speakers.

Far too many Monday Morning Quarterback's in the audio forums today who know it all. How many here have 10K ( very conservatively speaking) invested in a completely equipped test bench, hot air de-soldering station, separate regular soldering, station, dummy loads, regulated & isolated power supplies,  the myriad of other hand or test tools that go with doing quality work? How about keeping parts in stock, resistors, diodes, transistors, bulbs, LED's the common part number semi's, capacitors?  What's that you say..?.. just order everything piecemeal  as needed from Mouser or Digi key, while gear and customers not so patiently wait, things pile, up, angry demanding owners email, text and blow up the phone?

How about experience, does that count for anything? Basic shop supplies, computers, genuine schematics?  ( don't get me going about doing quality work with freebees from HiFi-Engine)

Large filter caps are expensive, When you get to the larger main caps 40-60K microfarad 63 and 80v, 50$ + each wholesale. For the better quality low leakage high ESR, high current 105C long life caps are even bigger bucks. Oh you want Nichicon Fine Gold, Wima precision Film, Cornell Dubilier Axial electro's for vintage gear, big bucks. Plus the time to look the proper replacement or upgraded parts up. Then there is diagnostic time, cleaning, labor, taxes. Pulling each board to deep clean, reflowing 100's of solder joints, It all adds up.

Only you can decide what is fair to pay . Don't like the shop's price, shop around more, do your research before committing to shipping a unit to one shop. Then if you don't like their price or the services,  you are not stuck with paying their price, or sending it somewhere else on your dime. If you like the amp, plan to keep it forever, (how ever long that is depends on you) expect high quality parts to be used,  as well as workmanship, by someone who will be there tomorrow to back it up, expect to pay for it. 

In my experience, replacing a failed cap and recapping the rest of an amp is rarely ever that cut and dry. What caused the cap(s) to fail in the first place? Age, another component or hidden issue within the unit? Who pays to locate that? What if its more involved than estimated, who eats that?  Things are almost as never as cut and dry in reality as they are described on the forums where all the experts reside. If they were, everyone would be able to repair their own gear, no need to pay someone else to do it.

With so many so-called experts here, I'm surprised someone couldn't offer to pay YOU for the privilege of recapping your amp, or at least do it for you for free.