fat ol' sun

What a shame.............  I've been listening to- and latterly playing the guys songs, my whole life.

 

Wonderful, laid back delivery, killer guitar tone, widely influential.  A huge loss.

A very fine musician, with a fantastic body of work. The most laid back tunes. Very sad.

stereo 'verb boss rv-5?

Went with a Hot Rod Deluxe, thanks for all the info!

Good amp, had one of those. Good clean tone to do stuff with. Enjoy  :o)

I use one of these:

 

 

Not as versatile as the Yamaha amp, but it does one great sound. Plus, it looks pretty cool as well.

I play on of these through a marshall 2X12 with greenbacks loaded. Sound is very useable. Good at home volumes, btw I use effects to colour the sound, but, the clean tone is a good starting point.

I spent ages last night looking at old scopes on ebay.  Fuck's sake.

 

Still think I'll pass on one just now.  Want to build another couple of pedals and get some confidence before forking out on more tools and stuff.

The scope(s) i was refering to is/are new, single channel and 100bux. No need to buy second hand.

You're right though, if you lose interest in the whole malarkey it is money for nuthin'...

Maybe if I do a few more kits and decide it's something I want to keep doing then I'd spend a hundred quid on an oscilloscope.  Hard to justify buying one just now though.

 

Feels like poking around with the multimeter and understanding what voltages and resistance are doing at each stage of the circuit is a good way to gain an understanding of what the circuit does. Remember, total electronics beginner here.

 

What benefit would an oscilloscope have over an audio probe I can solder together with a jack and a spare capacitor?  Would it not just be telling me that yep, there's no signal at this point and yup, there's a signal at that point. The same as the multimeter or probe?

Yep, you can learn a fair bit poking around with a meter, but a scope will give you so much more info, with  single prod you can see a dc level, ac peak content, frequency content, distortion type simultaneously. In my book you will learn a shit load quicker. You will learn to recognise different types of distortion and frequency response etc.

Once you use a scope well it's a bit like comparing fumbling around in a darkened room versus turning on the lights. You will find what you are looking for quicker and you will have a better appreciation of the unplanned behaviour of circuits that you couldn't hope to find with an audio probe or meter. There is a whole heap of possibilities between "yep the signal is there" to zip, nada, nuthin'...

Well... that's what I thought at first. Resoldering the points was the first thing I did when it wouldn't work.  After that I traced through the circuit with a multimeter and a note from a synth going into the input.  I could see the 0.07 volt signal from the synth going to the capacitor but it wasn't appearing at the other pin (testing the pin on the capacitor, not the track).  If it was just a solder issue would I not see voltage at the pin then disappear at the copper track?

 

As far as I understood it only the wee capacitors that look like batteries should be polarised but it was hard to go against the behaviour I was seeing. Having said that I am a total noob so it's possible I just fucked up the soldering twice.

You know you can buy a decent single channel oscilloscope up to 20MHz (well good enough for audio) for the price of a pedal now (about a hundred bux). No more multimeter guessing, you could see a decent representation of the ac and dc components of your signal.

Clean boost is alive!  Took ages to find the problem. Eventually after going over the circuit to follow where the input signal was being lost it turned out the yellow box capacitor was the wrong way round.  Didn't realise it was polarised (if that's the correct term).

 

Felt fucking ace when the sound started coming out of it.

 

The yellow capacitor is not polarised. I think by removing it and replacing it you resoldered a dry joint. In any event well done getting your circuit going...    :o)

Good stuff, hope it all works out.

Got hold of Dennis today, so that's all good now. Seems to be a very friendly and helpful guy too.

 

As for the diagnosis - It cuts out to a very low volume, but there was some sound if I remember right. Haven't turned it on since purchase, don't wanna do any more damage. I'm expecting some problems, but was happy with the low low price. I'm hoping it's not a dead OT, fingers crossed! Not sure of the age at present, but it's had a tough innings and two previous owners, has been re-tubed a few times, at least once without biasing, so who knows. It's been to a tech before (through the previous owner) and left without the problem properly sorted, so I'm just gonna go to the expert, save any more carry on.

Fat Ol' Sun - the amp's a Laney GH100L, bought very cheap as it's not working. Starts up fine, but starts to cut out as soon as volume gets high. I thought a tube swap, but apparently the previous owner tried this already (twice), so it will likely be some other issue. Due to not being sure what's going on with it, I thought a very experienced repair guy would be a good call, to save costly misdiagnosis (don't wanna buy more tubes just to be back to square one AND have to take it back in again). Any ideas much appreciated though???

Got a boss TR-2, I don't use. As new. That the sort of thing you are looking for?

Looking for a food Tremolo pedal.

 

No Biyang, or any of the cheaper ones.

 

Pm if anyone has anything please.

I've got a slightly knackered tube amp that I need to get to a service/repair. I've tried contacting Dennis Marshall (as he always seems to be the first name that people recommend) but haven't had a response yet. Just in case I can't get in touch with him, does anyone know anyone other reputable and reasonably local people that might be able to help?

I've done a bit of amp stuff in the past, I took the quiz. What's up with the amp?

Does anyone one here know how to set bias on amps?

I've never done it before and I'm a bit wary.

Happy to pay.

What amp model is it?

Have fun. Lovin' the 70's hi fi knobs btw.

Cool, good buy!

What's the deal with the four white keys and the black toggle switch?

argument for covers = all along the watch tower, jimi hendrix

argument for originals = all along the watch tower, bob dylan...

Peace out, my work is done here

Probably out of topic of the thread.

but I take photographs. http://scottamurray.com

guid photies min!

1976 Korg PE 1000 Polyphonic Analogue synth is still for sale.

Techincs are still for sale

PE1000 still up for sale?

Does anyone know anybody/where in Aberdeen that does amp repair? I've been put on to a guy in Ellon but seeing as I don't drive I'd rather not have to drag my amp on the train. :/ any suggestions welcome

What kind of amp is it? What is wrong with it?

Nice kit Keeno. Which matamp is that?