Total noob moment...

[davetherckstar]

I've got a BV120H that good ol' dad gave me a couple years ago. Long story short, it's been through a good amount. Just replaced the speakers and now my input goes out. I've got cracked solder around on my input jack (I can feel it wiggle) and my local shop charges a $50 bench fee plus labor, for a 2 second fix, so I'm doing it myself... now here's the dumb part...
How do I get the board off the housing??
I've got all the visible mounting screws out and all the caps and nuts off and it's still on there pretty good.

Can anyone help a starving artist?

[Euthymia]

Mm, yes, 2 second fix, and they charge for the time it takes them to get the case open and the board out (and back in).

You'll need to take all the knobs off, and the pot hardware as well, and the nuts that hold the jacks on, basically everything that's soldered to the PCB and pokes out the front panel will need to have its fastener pulled off.

Then you need to pull all the screws that hold the PCB to its standoffs, and if the power transistors are soldered to that PCB, there will likely screws going from the chassis through the bodies of the transistors, and all of those must be removed as well. One trick is that after you've pulled all the hardware you can see and it still won't budge, look at the underside of the chassis and see if there are any screw heads in locations you didn't notice.

After all that, you can gently lever the front edge of the board away from the panel, and if there are any wires that prevent it from moving, you can pull those, being sure to mark their locations for later reinstallation.

We're kinda earning that bench fee, aren't we? Just remember that it is possible to get the PCB out of there, you just need to disconnect whatever is holding it in place.

[Ronsonic]

I've got a BV120H that good ol' dad gave me a couple years ago. Long story short, it's been through a good amount. Just replaced the speakers and now my input goes out. I've got cracked solder around on my input jack (I can feel it wiggle) and my local shop charges a $50 bench fee plus labor, for a 2 second fix, so I'm doing it myself... now here's the dumb part...
How do I get the board off the housing??
I've got all the visible mounting screws out and all the caps and nuts off and it's still on there pretty good.

Can anyone help a starving artist?

So much for it being a 2 second job. Sorry, you knew you weren't going to get a lot of sympathy here with that.

Without having the amp in front of me, all I can offer is encouragement. It is an inanimate object and therefor must, eventually, respond to reason. Keep looking at it from all angles and tugging and thinking the problem through.

[Enzo]

There are only so many things that can hold a circuit board in the chassis.


As to a 2 second repair, yes, soldering the jack takes only a few seconds. And next Thanksgiving, make sure to tell your mom that serving up a big turkey dinner just takes a couple minutes. All you have to do is walk the platter over to the table and set it down.

[davetherckstar]

oh man...

Three tongue lashings in as many hours from "senior members" for what I knew was about as dumb a question as I could post... I knew I was in the right place. Reminded me of my AirForce days.
I know I'm no expert, but I'd like to be. Gotta start somewhere. Thanks for the suggestions. I'll let you know how it goes.

[gbono]

So after you get the PCB away from the chassis - do a good visual inspection of the board, wiring and newly opened areas look for any other solder joints that need touching up, leaking caps, etc - this is a good time to clean the pots, switches and connectors.

[Euthymia]

Three tongue lashings in as many hours from "senior members" for what I knew was about as dumb a question as I could post... I knew I was in the right place. Reminded me of my AirForce days.

You're not getting ragged for the question, per se, as we all know what a bitch it can be to get a PCB out of an amp, especially before you have done a dozen of them and know the little tricks and techniques.

What you got 3 rations of shiznit for, airman, was the "2 second fix" comment that preceded it. :-)

[Enzo]

Yeah, what he said.

We are happy to respond to the most basic of questions. But just keep in mind that the free professional advice is coming in many cases from individuals who make their living doing this work.

[davetherckstar]

Awesome, awesome, AWESOME!

Update: 2 screws under the 2nd board and a couple disconnected spade plugs later... SUCCESS!!!

Thanks for your help gents. I understand and respect the position of those who make a living answering questions like this, I'm just a stubborn do-it-yourselfer.
Also had to replace all 4 speakers (ex bassist ran it at unmatched impedance till they all blew) couldn't get the SLM Electronics replacements so I found some Jensens. Sounds great so far