I’d be happy to provide an estimate once we’ve determined precisely what’s gone wrong and why.

Speculation

Electronic equipment failures are typically ‘black box’ scenarios, meaning there are usually no obvious visual signs as to what has gone wrong.

Contrary to what many imagine, ‘red flags’ like the “bulging capacitors” are a largely forum-created meme in hi-fi gear. Failed components usually show no external signs of having failed and opening up a failed piece of hi-fi equipment like a complex power amplifier is where the real work begins.

Assessment

Progressing from an unknown failure mode to successful remediation is where skill and experience come into play. Technical testing and assessment require the use of test and measurement equipment, something that in and of itself needs deep experience.

The more complex the equipment, the more unknowns and the more challenging fault resolution becomes. Guesswork doesn’t play a useful part in a good technician’s approach because it is essentially pointless. The only solution is to test, measure, and get to the root of the problem/s.

Asking a technician for a “quote” before they’ve looked at a piece of equipment is similarly pointless because it’s asking them to guess what’s wrong, what parts will be needed and how long the repair will take when they have none of that information.

It’s like asking a mechanic for a quote over the phone to fix a car with unknown problems that they haven’t seen, or asking a surgeon for a quote on surgery before they’ve seen the patient. It’s pointless, but more importantly, significantly underestimates the complexity of jobs like this one:

Six Steps

The correct approach involves a logic-based and stepwise appraisal and assessment of the equipment and its faults. There are six steps to electrical fault finding and repair:

1. Collection of evidence
2. Analysis of the evidence
3. Location of the fault
4. Determination and removal of the cause
5. Rectification of the fault
6. Checking, adjustment and calibration

Steps 1 to 3 comprise the assessment phase and generally have to be completed before a cost estimate can be offered. All the steps require a technician to be hands-on with the equipment. Other issues may become evident once work has commenced, which is why reputable repairers typically provide cost estimates, and generally only after this critical assessment phase.

Pretenders

So, why would anyone pretend to know what’s wrong and how much a repair will cost without first inspecting and testing the equipment in question? Simple: they want or need the business and they’re prepared to potentially mislead people to secure it.

Some folks expect sight-unseen quotes and less ethical repairers enable this expectation because it brings in work. I don’t need the work and I’m not prepared to do that, it’s that simple.

I could never have guessed what was wrong with this Krell KSA-100S I repaired, for example. I fixed multiple issues only to discover a hidden one at the very end. Similarly, an Accuphase E-303 I repaired contained five unrelated faults, none of which could have been guessed.

When you have a repairable amplifier, the last thing you want is to end up with a ruined one. Take this beautiful Gryphon DM-100 class-A amplifier for example. Sadly, this lovely amplifier visited all the wrong people before I finally saw it and by then it was unfortunately too late.

More…

Information regarding general service and repair costs can be found in this FAQ. Find out more with these repair-related FAQs:

• Liquid Audio’s charging structure
• Why equipment inspection is so important
• Why some equipment shouldn’t be repaired
• Why we are often fully booked