Yes, pictures should help.  Especially of any trace repairs that have been done.
Also, e,b,c voltages for T3 and T5.

That looks fantastic 

You did an awesome job.

Congrats 

I put all the knobs nuts washers etc back on my all time favorite amp

You cannot view this attachment.

They had been off since you guys fixed it.  I had planned to get around it but never did then I had an intermittent input jack and noticed how bad the chassis was rocking back and forth.

 

Hang in there bud 

Don't give up before the miracle 

If anybody can get your amp running these guys can.

Maybe post up some pics of the boards

 

Well, I've replaced T1 and T2 as well as D1. Still reading pretty much the same voltages. At this point, all transistors have been replaced in the amplifier portion. I hate to deem this unit a loss but I am leaning that way as it was quite a mess with the traces from prior techs. Im 99% sure I have all the traces repaired correctly.

Its Alive! Built a box for and am really happy about it. Works with a small Accutronics plastic reverb tank, still sounds deeeeeeeep.

Quote from: saturated on April 21, 2024, 03:07:37 PMGood afternoon solid state afficianados.

Hope your weekend is going well at least what's left of it.



I had a question about preparing some banana jack patch cable connectors whether or not these needed to be soldered.

The wires shown are not gonna be used they are only to illustrate the routing of the holes in the metal part.


You cannot view this attachment.

Maybe I just strip the wire insert it and screw the cap down...idk

Thanks

Use the compression screw on system for now and decide later on after pondering it a bit if you think soldering will be the best final path. As an electrical/electronics engineer, the "right" way of doing things is not always the best or most rational, and primarily taught for what you should expect if you go to work in whatever cornered field of science your education leads you to where far more educated and experienced engineers told me over a decade ago, you'll ultimately end up only using 10-15% of your education wherever it is you settle in lol.

I'm sitting on a huge regret ATM from trying to repair my Zoom G5 some lunatic woman smashed and doing it the "right" way was a disaster! I suspect my repairs won't be successful but fortunately, the unit overall should still work and I will either have to scroll effects to a different bay of the controls since it has 4 and 2 were broken, or stick to programming it by USB and PC.
The only upside to the destruction of that unit is I bought a 2nd one. I got the damn thing 12 years ago brand new when they were about $450, but for $180 on zZounds which a week later, went right back to the normal price. I have some current generation digital floor units that are absolutely amazing, but this 12 year old dinosaur still outperforms them tonally. Parameter wise, the modulation and effect parameter adjustable functions are quite mediocre.

Good afternoon solid state afficianados.

Hope your weekend is going well at least what's left of it.



I had a question about preparing some banana jack patch cable connectors whether or not these needed to be soldered.

The wires shown are not gonna be used they are only to illustrate the routing of the holes in the metal part.


You cannot view this attachment.

Maybe I just strip the wire insert it and screw the cap down...idk

Thanks

I'm relieved that my signal generator provided some nice traces

You cannot view this attachment.

You cannot view this attachment.

Idk why the trace from that transformer was so sketchy.

Yes sir thank you 

I decided to take a look at this on my scope

Btw here is the source of 12v ac

You cannot view this attachment.

So connecting scope probes directly to cables coming from ac source

You cannot view this attachment.

My phone was struggling to get a full trace left to right despite trying to adjust trigger etc the trace was jittery and flickering real bad

So now connect scope probes to (+) and scope ground to (-)

You cannot view this attachment.

Which I like that but when I had the scope switched to ac I had just a flat line

Then connecting scope probe to (~)

You cannot view this attachment.

So I guess everything is cool. 

I'm off to connect some other stuff to the scope and try to get a better full steady trace.