1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

So... my amplifier just exploded!

Discussion in 'Home Cinema & Hi-Fi' started by Guest2, 27 Sep 2014.

  1. AHarvey

    Capodecina

    Joined: 6 Mar 2008

    Posts: 10,060

    Location: Stoke area

    yeah I had the same advice with a SKY+ box...

    Left it unplugged for 2 days, took the case off to remove the HDD and touched something underneath.. BANG

    Burnt a hole in my finger and had a dead arm for about 3 days :(

    happened at 3am as well, could have been lying on the floor for hours until someone found me!

    OP, Bin it/get a pro in to look at it/insurance job... I wouldn't bother trying yourself unless you really know what you're doing and I betting you don't :D
     
  2. DJMK4

    Capodecina

    Joined: 1 Dec 2004

    Posts: 21,949

    Location: S.Wales

    Touching capacitors, doesnt seem like the smartest idea, its not A) going to fix the amp, B) Going to fix your emotions after a negative day :p
     
  3. Orionaut

    Sgarrista

    Joined: 2 Aug 2012

    Posts: 7,813

    Probably not in this case!

    It is probably the power supply capacitors that have exploded!

    A reasonably easy fix as long as it hasn't taken out anything else when it failed!
     
  4. Raymond Lin

    Capo Crimine

    Joined: 20 Oct 2002

    Posts: 68,484

    Location: Wish i was in .Lethal's house

    OP should open it right now to poke around and find out. :D
     
  5. antijoke

    Caporegime

    Joined: 28 Jan 2003

    Posts: 39,011

    Location: England

    Be my guest.
     
  6. Guest2

    Capodecina

    Joined: 6 May 2009

    Posts: 17,483

  7. ElliorR

    Sgarrista

    Joined: 20 Feb 2009

    Posts: 9,344

    Location: Not where I'd like to be

    But to be safer, only do it under a lonely tree in a thunderstorm.
     
  8. ElliorR

    Sgarrista

    Joined: 20 Feb 2009

    Posts: 9,344

    Location: Not where I'd like to be

    Yeah but your torque range bolovating unit has gone as well as the thingamajigs and I can't get the parts till a week next Tuesday and then I'll hand it over to the YTS lad we just got and it'll be good as new.
     
  9. Ragnahex

    Hitman

    Joined: 8 Oct 2013

    Posts: 941

    yup that looks broken to me
     
  10. Sliver

    Capodecina

    Joined: 27 Dec 2011

    Posts: 10,821

    Location: Darlington

    Yes you should. Also get someone to video the switch on and make sure they upload it to YT for the lols.
     
  11. Guest2

    Capodecina

    Joined: 6 May 2009

    Posts: 17,483

    Where / what?
     
  12. Whitewater

    Mobster

    Joined: 20 Feb 2004

    Posts: 3,686

    Location: Blyth, Northumberland

  13. Guest2

    Capodecina

    Joined: 6 May 2009

    Posts: 17,483

    1.21 giga watt amp? :)
     
  14. SexyGreyFox

    Man of Honour

    Joined: 29 Mar 2003

    Posts: 53,199

    Location: Stoke on Trent

    One of my Mackie SRM450 PA speakers blew up on stage last night so we stopped the gig, replaced it with a stage monitor that surprisingly did an excellent job and will be used again tonight.
    I've just bought two more for a steal and I'm going to collect them tomorrow morning.

    Oh and yes I have tried turning mine back on with the board out of the speaker enclosure but it's dead.
     
  15. Whitewater

    Mobster

    Joined: 20 Feb 2004

    Posts: 3,686

    Location: Blyth, Northumberland

    :D

    Handy if the planet ever needs an intercom.
     
  16. spoffle

    Capodecina

    Joined: 4 Jul 2012

    Posts: 16,909

    You're supposed to stick a fork in it, then lick the fork.
     
    Last edited: 27 Sep 2014
  17. One

    Soldato

    Joined: 24 Aug 2011

    Posts: 6,162

    Location: ABQ, NM

  18. itchy

    Mobster

    Joined: 29 Mar 2011

    Posts: 4,907

    Take the board out and flip it over and find the short. Sounds like a cap but yours look ok.

    The will be somewhere on the board a blacked area where it blew. Then just trace from there. Nothing goes bang without leaving a mark! ;)
     
  19. aceface57

    Wise Guy

    Joined: 25 Jul 2004

    Posts: 2,042

    Location: Aberdeen

    Is it leaking though? Looks pretty typical of the glue used to keep the Caps sitting stable on the board, quite common I thought?
     
  20. Sinopa

    Gangster

    Joined: 23 Nov 2004

    Posts: 301

    Although the main caps (purple) on these amps can blow very spectacularly, they also go dead short with no other signs of failure.

    Check Q703 and Q702 which are thyristors that are mounted to the heatsinks at the bottom left of your second picture. If a cap is short then one of them is likely to have blown its top off.

    Also, as itchy said, check underneath for blown printed circuit track.