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Studio equipment repairs in London (edited)

edited July 2020 in Other

Does anyone of know a really
good service person for
studio equipment in London.

I have a Korg 168RC digital mixer with
blown capacitors which needs repairing.

Thank you in advance.

Comments

  • Maybe add "in London" to the thread title?

  • not trying to be snarky, but can you do it yourself? if you already know which caps are blown, its pretty easy to swap them out with minimal soldering experience.

  • @shinyisshiny said:
    not trying to be snarky, but can you do it yourself? if you already know which caps are blown, its pretty easy to swap them out with minimal soldering experience.

    Good question.

    It requires a specialist.

    @syrupcore said:
    Maybe add "in London" to the thread title?

    Top tip.

    Thank you.

  • No, if it where those capacitors
    it would be a very simple fix.

    It’s the smd’s.

  • edited July 2020

    @Gravitas said:

    No, if it where those capacitors
    it would be a very simple fix.

    It’s the smd’s.

    Got a picture of the pcb area with the broken caps?

    BTW, some mobile phone repair shops have all the equipment required to do such SMD repairs.

  • @Gravitas said:

    No, if it where those capacitors
    it would be a very simple fix.

    It’s the smd’s.

    Good luck

  • @u0421793 said:

    @Gravitas said:

    No, if it where those capacitors
    it would be a very simple fix.

    It’s the smd’s.

    Good luck

    I've recently swapped a SMD 44-pin QFP on a laptop by the help of enough flux, solder and a razor blade (pushed between solder pads and component connectors while heating with enough solder on it). I'm not experienced with SMDs but somehow I managed to make the thing work again.

  • edited July 2020

    @u0421793 said:

    @Gravitas said:

    No, if it where those capacitors
    it would be a very simple fix.

    It’s the smd’s.

    Good luck

    Thank you.

    @rs2000 said:

    @u0421793 said:

    @Gravitas said:

    No, if it where those capacitors
    it would be a very simple fix.

    It’s the smd’s.

    Good luck

    I've recently swapped a SMD 44-pin QFP on a laptop by the help of enough flux, solder and a razor blade (pushed between solder pads and component connectors while heating with enough solder on it). I'm not experienced with SMDs but somehow I managed to make the thing work again.

    I thought it was a simple fix myself
    and I'd got replacement capacitors with
    similar values but not the right ones
    because it didn't work.
    Though the mixer itself still turns on,
    It literally is on the blink.

    I hear you in regards to mobile phone guys
    having the necessary equipment.
    I personally would need a proper solder station
    with a heat gun to do the job properly.

    I could do it but I'd rather seek
    someone who does it professionally.

    If I can't find someone suitable
    I will do it myself eventually.

    Good point in regards to a photo of the PCB.
    I will need to open it up to do that and right now
    I'm in a middle of a mixing and mastering session.

  • edited July 2020

    I used to have exactly the same mixer, with the 8 ch expansion.

    Seems like an age ago ;-)

    Good luck !

  • @topaz said:
    I used to have exactly the same mixer, with the 8 ch expansion.

    Seems like an age ago ;-) I sold them to Phil Collins tech.

    Good luck !

    It's a nice little mixer.

    Thanks dude.

  • Indeed, I really dig the sound of it's converters... digitizes 18 bits, but keeps only the 'good' top 16 bits, resulting in a perfect data word.
    Sold mine, too, but kept the expansion (for reason above) B)

  • @Telefunky said:
    Indeed, I really dig the sound of it's converters... digitizes 18 bits, but keeps only the 'good' top 16 bits, resulting in a perfect data word.
    Sold mine, too, but kept the expansion (for reason above) B)

    Yup, I hear you.

    I didn't get the converters though I do still
    have the companion audio interface.
    I still have one of the original blackfaced ADAT machines
    which is why I went ADAT lightpipe in the first place.

    I really like the reverbs for grungy beats and it's slightly metallic sound.

  • Good (and useful) gear :+1:

  • @Telefunky said:
    Good (and useful) gear :+1:

    Absolutely, it's why I'm being so particular about getting it repaired. 😏

  • edited July 2020

    I recently had to replace an SMD mounted memory chip - and no experience with hot air soldering at all.
    So I picked a (trash) circuit with similiar sized parts to practice. Fully focussed on the target chip I didn't notice a small capacitor also being exposed to the air stream ... until I heard a 'shot' and the projectile (formerly the cap's shell) hit my cheek. Wtf.
    It had a stunning impact and could have turned out really bad if it had hit the eye. :#
    Lesson learned...
    The air gun was a totally inappropriate cheapo, but covering parts with heat resistant material helped. Solder quickly melted, the IC could be removed by pliers and was successfully replaced.
    I actually did like the process and may consider a proper air soldering system (future).

  • @Telefunky said:
    I recently had to replace an SMD mounted memory chip - and no experience with hot air soldering at all.
    So I picked a (trash) circuit with similiar sized parts to practice. Fully focussed on the target chip I didn't notice a small capacitor also being exposed to the air stream ... until I heard a 'shot' and the projectile (formerly the cap's shell) hit my cheek. Wtf.
    It had a stunning impact and could have turned out really bad if it had hit the eye. :#
    Lesson learned...

    Good lesson to learn.

    The first time I tried a heat gun
    I blew the components around the room.

    I was so shocked.

    It's a whole different experience from using a regular soldering iron.

    The air gun was a totally inappropriate cheapo, but covering parts with heat resistant material helped. Solder quickly melted, the IC could be removed by pliers and was successfully replaced.
    I actually did like the process and may consider a proper air soldering system (future).

    I would say get a solder station, they're worth it.

    I had a modification to do to a preamp that
    decreased the noise level by almost 15db on the SPDIF out.

    I had bought a preamp, tested it's analogue output
    and then it's digital output and discovered the digital output
    was way noisier than the analogue outs by almost 20db.

    I thought that unusual and contacted the company.
    Eventually I got talking to the president of company,
    he spoke to his engineer in China and they sent
    a modification for me to do.

    It worked brilliantly.

    Very happy.

    I could order the parts for the mixer and a
    soldering station but I also need a good engineer
    to exchange ideas with once in awhile and it needs
    a refurb.

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