Sansamp BDDI buzzing after bouncing

[Monz]

Does anyone know an amptech or someone they could recommend to have a look at my sansamp?

I managed to knock it off the top of my cab and it hit the floor with a sickening thump... now all I get is a (bad earth) type buzzing and I dont have the skills to sort it

[rmorris]

Location ?

[Monz]

Sorry.... should have said

I'm in North Yorkshire but I can post it anywhere

[3below]

Be brave, open it up and have a look. From what you say it could be something as simple as detached screen lead on a jack socket. If it is this obvious it is an easy DIY fix.

[rmorris]

[quote name='3below' timestamp='1358924853' post='1947043']
Be brave, open it up and have a look. From what you say it could be something as simple as detached screen lead on a jack socket. If it is this obvious it is an easy DIY fix.
[/quote]

+1 Sounds like a broken ground (screen) path.

[3below]

In a similar incident this week, my dog knocked Rockbass Corvette 5 stringer over (yes I should put back in case). I go to play it, no sound. Open up control cavity, one wire detached from potentiometer. Easy DIY fix, and was not surprised, the soldering in this bass is not the best I have ever seen.

[Monz]

Ok guys..... (best spitfire pilot voice) I'm going in!

[jackers]

(fnar fnar )

good luck!

[discreet]

[quote name='Monz' timestamp='1359007700' post='1948351']
Ok guys... (best spitfire pilot voice) I'm going in!
[/quote]

He's been in there for a long time now... should we alert the authorities..?

Edited January 24, 2013 by discreet

[Happy Jack]

He must be out of fuel by now ... he's ditched.

[discreet]

[quote name='Happy Jack' timestamp='1359028352' post='1948609']
He must be out of fuel by now ... he's ditched.
[/quote]

Maybe he did it on purpose, like Orr in Catch-22.

[Monz]

LOL

Right it's put together in a way to stop you getting the circuit board out without desoldering the input/output jacks completely off the board (bloody cowbags).

So put it all back together and had a play with all of the dials and the upshot is the presence pot is the problem... with it completely backed off the unit works ok. I need to find out if it can be replaced but I'm guessing the unit will be made in china or somewhere like that

[3below]

Do Sansamp have a repair service in the UK?

[discreet]

Bloody cowbags?

[3below]

Have thought about this a bit more (not sure of brain power after day at work though). The unit only working when presence pot full on could be symptomatic of a 'fractured' solder joint. If the pot is a pcb mounted one it seems even more likely. The fix might be as simple as 'reflowing' the solder joints of the pot on the pcb.

[rmorris]

[quote name='3below' timestamp='1359055329' post='1949214']
Have thought about this a bit more (not sure of brain power after day at work though). The unit only working when presence pot full on could be symptomatic of a 'fractured' solder joint. If the pot is a pcb mounted one it seems even more likely. The fix might be as simple as 'reflowing' the solder joints of the pot on the pcb.
[/quote]

+1. First stop is to reflow the solder joints to the pot. Maybe remove existing solder ( with solder wick ) and re solder.
Is there a screen/wire connected to the pot body itself ? If so then it's a suspect as such joints sometimes fail due to the pot body acting as a heatsink during soldering. The joint may then become unreliable over time (dry joint). Re make all the solder joints anyway.
Let us know how you get on.

[3below]

[quote name='rmorris' timestamp='1359075599' post='1949684']
Maybe remove existing solder ( with solder wick ) and re solder.
[/quote]

+1 on remove old solder.