Traynor amp chip ID needed

[Mark Hammer]

Bought a ton of stuff for peanuts yesterday at a "garage sale" at a local vintage/2nd-hand store.  Among the almost Jimbob-like bargains were a couple of small practice amps, a Gorilla GG-25 and a Traynor T10/G.  

The Gorilla works fine (just needed some knobs and some bolt tightening, really) but the Traynor has a blown power amp chip.  I've got plenty or replacements to choose from in the parts bin, but let me tell you this puppy is REALLY blown, no identifying marks at all except that I know it is a 5-pin device in the style of the TDA chips (TDA2003/2030, etc).  I'd rather not use the "smoke test" to tell if I've replaced it with the same device.  Anyone know what goes in there, or a URL I could pursue to find out what goes in there?  I don't need a full schematic, just enough info to replace the device in question.

Also scored a DOD TR3M floor multi-fx unit (thrown in for free when they added up the tally of everything else) and an Ashley SC-55 stereo limiter compressor.  The LED display on the SC-55 is tough to get used to.  Rather than showing you the level per se, the 5-LED display shows you how much gain reduction is applied.  So, it lights up from right to left, with rightmost LEDs signifying smaller amounts of gain reduction.  Conceptually it makes sense, but boy oh boy that left-to-right-proportional-to-level thing is DEEPLY engrained in this brain!

[Fret Wire]

http://www1.korksoft.com/~schem/bargainheaven.htm

This was all I found right off. It has some Traynor schematics, might help.

[Mark Hammer]

Much appreciated.  I know the site, and have downloaded all their holdings, but unfortunately none of the Traynor material available there is solid state.

[Lonestarjohnny]

Hi Mark, I'm getting ready to leave for a Blues jam, as soon as I check out my rig I'll run in the house and grab my Traynor, won't take a sec to bust it open and give ya the no. be back in ten min.
JD

[Lonestarjohnny]

TLO82cp Mark, this is the # out of my TS-10

[Lonestarjohnny]

I don't know if your amp is that close to mine but I would think they are simular, mine has 2 regulators on the side of the board, 1 is a TIP100 and the other is a TIP107, both are motorola's, this is one of the best sounding S/S amps I've ever owened, it has a 6 in speaker in the cab, but I put a speaker out and it drive's my Marshall 4X12 speaker cab with no problem.
JD

[Mark Hammer]

Much thanks to you too for your efforts and diligence.  Unfortunately...yet again...this is not the same amp.  A TS-10 and T10/G would appear to be quite different in design.  This thing has a 4558, a diode pair for clipping, a very normal looking power supply (4 diodes and two big caps for smoothing), and a 5-pin power amp chip.  My sense is that it is probably a hair's difference from the Marshall 8010, which is a similar drive/master-plus-3-band-EQ in a small box with a 6" speaker.  If I didn't know just exactly how many 5-pin power amp chips (that could put out a nominal 10 watts) were out there, I'd be less fussy.

I went to the Yorkville/Traynor site and sent a field-service note to them asking for a chip ID.  We'll see if they get back to me.  As a (distant) legacy product, I'm not expecting miracles.  The present state of the chip reminds me of one of those gangland slayings where they blow the victim's face off with a shotgun just to throw the authorities off.

[R.G.]

Mark,

The key to sussing out unknown chips is the power supply pins. If you can make a drawing of the chip and the circuit around it, I can probably point you to a chip that will work, possibly with some pin swapping. It will be about as complicated as reverse tracing a single-741 opamp circuit.

A five pin power amp chip is pretty straightforward - you need one + power, one - power, one - input, one + input and an output, and ... OK, that's all. Once you know which pin, left to right goes where in the circuit, and the power supply voltage(s), you're done. Match that with any close-enough five pin power amp chip, and you're probably in business.

The bigger question is - what did they do to it to blow its face off? The original assassin is still hiding in there.

[Lonestarjohnny]

to answer RG's big question, how bout a 30 amp fuse, or tinfoil around the blown fuse, and I've even seen a few where they opened up the amp, cut the wire's goin to the fuse and bypassed it, LOL !
JD

[Dean Hazelwanter]

Hey Mark...

Here's the direct email address of Mike Holman from Yorkville Sound :
mholman@yorkville.com He may be the one that responds from Yorkville to your request anyway, but it never hurts to have a direct line. Mike was *very* helpful in sending info for my YBA-1s.

Hope this helps!

[Mark Hammer]

Thanks to all.  I'll give Traynor a couple of business days before I start bugging folks.

RG,
Yeah it should be possible to suss out which pins go where from the traces, and also figure out what the supply voltages were from the transformer.  Given how many amps in that power range and pricepoint use them, money is still riding on the TDA2030, but there are a ton of chips out there in the same package.  I have a ton of work this week preparing a conference presentation and assisting in the hiring of someone before I head out of town, so I think I'll leave the detective work to the good folks at Traynor....just as sort of a favour to them. :wink:

I'm off to wonderful St. John's, Nfld & Labrador this Wednesday for a couple of days (and off to Calgary, Vancouver, Victoria near the end of August).  I was hoping to sneak in a visit to Garrison Guitars while I was there, but they said it was not possible to arrange it.  Anyone out there on the rock this week?

[Mark Hammer]

Thanks to all.  I'll give Traynor a couple of business days before I start bugging folks.

RG,
Yeah it should be possible to suss out which pins go where from the traces, and also figure out what the supply voltages were from the transformer.  Given how many amps in that power range and pricepoint use them, money is still riding on the TDA2030, but there are a ton of chips out there in the same package.  I have a ton of work this week preparing a conference presentation and assisting in the hiring of someone before I head out of town, so I think I'll leave the detective work to the good folks at Traynor....just as sort of a favour to them. :wink:

I'm off to wonderful St. John's, Nfld & Labrador this Wednesday for a couple of days (and off to Winnipeg, Regina, Calgary, Vancouver, Victoria later in August).  I was hoping to sneak in a visit to Garrison Guitars while I was there, but they said it was not possible to arrange it.  Anyone out there on the rock this week?