ADA Depot - A Forum To Support Users of ADA Amplification Gear

ADA Power Amps => B200s => Topic started by: rnolan on June 07, 2015, 11:00:04 AM

Title: B200s reflow
Post by: rnolan on June 07, 2015, 11:00:04 AM
 :thumb-up: :whoohoo!: just got my B200s back to normal (life), it had really bad (very loud) crackles in one channel. I had a tech tried to fix it twice, but no good :-( MJMP suggested I reflow (remelt/solder) all the joins, so just pulled it apart (finally) and did that. Gave it a test  :whoohoo!: all fixed. Thanks MJMP!! Next is a side by side comparison with my Carvin TS100. I did the quick test with no FX so far to check if it was working ok (and it is  :thumb-up: )
Title: Re: B200s reflow
Post by: MarshallJMP on June 07, 2015, 03:16:54 PM
No problem R!
Title: Re: B200s reflow
Post by: rnolan on June 08, 2015, 03:57:34 AM
Hey MJMP, well after the reflow my soldering skills have picked up  :thumb-up: (quite a bit), and today we got Mike's MP1 input jack mod done, also replaced the main vol pot. Then did his B200s vol pots, and finished with an old favourite and replaced a broken female XLR on his mic lead (Mike did most of it but I did a bit of soldering for him). All working well, has given his MP1 lots more gain/volume we think (on first listen)  (i.e. a smooth input path). The desoldering station works well but not so great for wide lugs like some of the PCB mounted input jacks, so out with the solder wick. So a successful weekend of fixing things  :whoohoo!: Thanks for all you're help and all the parts, keeping us Ozzies rocking  :banana:
Title: Re: B200s reflow
Post by: MarshallJMP on June 08, 2015, 10:41:05 AM
 :thumb-up:
Title: Re: B200s reflow
Post by: MikeB on June 08, 2015, 01:55:07 PM
Hmmm.  Lets not be hasty with the thumbs up.
When i got home and tried to reload my patches, it was apparent that something was not right. I got all depressed and just shut it down for the night. I'll investigate a full list of symptoms when i get home tonight.
At first glance, the display starts to flicker when in use the up/down buttons,  doesn't respond properly.
Also i had to reload the patches about 3 times and I'm still not sure it did it properly.
Title: Re: B200s reflow
Post by: MikeB on June 09, 2015, 01:56:38 AM
Have posted more on my MP1 issue in the troubleshooting section:
http://adadepot.com/index.php?topic=1160.msg9249#msg9249 (http://adadepot.com/index.php?topic=1160.msg9249#msg9249)
Title: Re: B200s reflow
Post by: VoxG2 on October 25, 2017, 10:03:35 PM
   Where does one have a B200S reflow done? Thanks.
Title: Re: B200s reflow
Post by: rnolan on October 27, 2017, 12:25:00 AM
I did it myself, it's actually not hard to do, just pull it apart, re-melt all the solder joins, feed in a bit more solder if they need it, B200s are not a complicated amp.  But if you are't up to using a soldering iron, any tech could do it for you, probably about 1 hours work (including pulling apart and reassemble)
Title: Re: B200s reflow
Post by: VoxG2 on October 27, 2017, 04:58:18 PM
  Hmmmmm...ok. Thank you!!