GALLIEN KRUEGER BACKLINE 100 GUITAR AMP PC
GALLIEN KRUEGER BACKLINE 100 GUITAR AMP SERIES

See either the K-212 or the K-058, depending on the amplifier model. Original Gallien-Krueger part number 090-0012-0. The front panel of the 400RB-II, 400RB-III, 400RB-IV, 700RB-II, 1001RB-II, the MicroBass Series, Backline 110, Backline 112, Backline 115, Backline 210,Īnd Backline 350 G-K amps. Includes nut and washer.Ħ electrical terminals on bottom of switch (DPDT). Same as the J-12A jack, but with longer (3/8') threaded bushing for mounting in thicker panels.

(SHORTING), WIRED, Switchcraft ™, LONG BUSHING JACK, 1/4', MONO, CLOSED CIRCUIT (SHORTING), WIRED, Switchcraft ™įound in vintage Fender ™ (and other) amps as the input jack.Īlso used in the Hot Rod Deluxe/Deville, Blues Deluxe/Deville as the main JACK, 1/4', MONO, OPEN CIRCUIT, WIRED, Switchcraft ™įound in many guitars, effects pedals, amps speaker output. Genuine Switchcraft™ nut and washer set for the J-563 jack. Reuse existing nut or order nut separately as part #JNUT-38, Nut & Washer NOT included - reuse original, or order JNUT-38.Īnd Gallien-Krueger ™. Models (including the G-K Backline 210 and some of the G-K RB series, such as

GALLIEN KRUEGER BACKLINE 100 GUITAR AMP PC

JACK, 1/4', MONO 4-PIN, PC MOUNT, Gallien-Krueger ™ AMPS Order the PNW-16 nut found in this section) Life, and help prevent 'scratchy pots' in later life.ĭownload cross-reference guide for these pots. The dust caps seal out dust for reliability, longer These pots areĪvailable with optional dust caps installed. Diameter of the body of the pot is slightly smaller than a dime. Note: These pots do not fit all G-K amps.Ĭompare carefully with the photo, or inquire if unsure.

GALLIEN KRUEGER BACKLINE 100 GUITAR AMP SERIES

PC board circuitry, including the 700RB, 800RB and 1000RB (original series from the Used in many Gallien-Krueger ™ amp models with PC MOUNT, 16mm DIAMETER BODY, 7mm DIAMETER THREADED BUSHING 'break-through' and adds overall durability.

Ideal for amp heads, combo amps, or smaller speaker cabinets. (wide end) x 3/4' diameter (narrow end) x 0.85' tall.

Ideal for rack-mount amps, combo amps, or small speaker cabinets. MEDIUM BLACK TAPERED RUBBER FEET, SET OF 4. The integral metal washer in the mounting hole helps prevent mounting screw Ideal for large rack cabinets or speaker cabinets. This heavy-duty rubber foot offers a sure grip With built-in lock washer to keep the screwĪnd nut from loosening. Used to connect a ground wire to a screw and nut on a chassis. No signs of anything burnt or scorched at all (though again, I haven't flipped the board - will tomorrow).Īny thoughts? I'm more used to things with tubes in them.Made from tin-plated brass - will not rust. Previous owner told me that a 'resistor' had blasted apart, and indeed there was a small chunk of something rattling around in the amp, but that something looked like the plastic/rubber/whatever coating from an NTC thermistor, though the two in this amp aren't 'blasted apart', and the amp wouldn't function at all without them. Haven't pulled the board out yet so I haven't checked for cold solder joints. Didn't bother with preamp, since it's completely disconnected for my testing. Here's the schematic for the power amp section: gallien-krueger-backline-600.pdf. Amp delivers plenty of power even while crackling, and fan turns on and off properly. Once the amp warms up enough to stop crackling (somewhere around 40☌ or ~100°f), noise at the output is around 1mv. I can see the noise when I probe Q14/18 base and emitter (perhaps it's coming from Q7A/Q7B, hmm.). Noise at the output is ~100mvP-P, and crackling can be up to 5vP-P, maybe higher (hard to catch on my analog scope).

Power supply seems fine otherwise +-60v are nearly exact, +-35v and +-15v are within 10%, and no detectable noise on any of them. Scoping the power supply rails, there's a bit of ripple on the +-60v but nothing that matches the crackling at the output. Hi all, I've got a Backline 600 that's giving me some nasty crackling and noise, which sometimes goes away after the amp warms up, even without the preamp board connected at all - meaning it's the power amp or power supply.

Gallien krueger backline 100 guitar amp