Not sure when, it was a while, but I got my Pathfinder 15R used maybe 2012, for $85 on CL, sounded great. Then it got 'sick' lost volume, got super distorted, and I just shelved it, played one of my other amps.Īround 2006/7, I joined TDPRI and started constantly reading, over the years, about the Vox Pathfinder, and how folks were ( are!) nuts about it. If you're (and I mean this generally, not you in particular, Mark) not comfortable desoldering a component, you shouldn't be snapping it off.I first ( maybe 2000) bought a used Cambridge 15 and used it in my ( then new) own band, and it was a little rockin' beast, for maybe 6 mos. Breaking components off means A) extra work when replacing them, B) that you may damage the traces on the underside of the board and C) that you often end up with components you can't reuse elsewhere. Well, some of us used a soldering iron to remove the components. They're not a huge investment, even if you're on a tight budget. Out of curiousity what's the other amp you were intending on pairing this with? Also, I paid less than two tenners (EUR) for my P10 which is actually the Union Jack "special edition". Problem is, we're probably too far away, generally - so we need you to help us help you Remember, there are plenty of people like me on this forum who would invite you over and fix your amp for you in exchange for a beer. Getting the board out is a bit cramped unless you disconnect the AC transformer, which I never did, either. Chances are you bumped or damaged something on the way. Considering nothing is producing smoke, no fuses are blowing, etc - it's one of the nicer problems to work on. While you're at it, clean up C12's remnants with a solder sucker or desoldering braid and install the cap again. Then get a view of the underside of the board (looking for lifted traces here, it's hard, but try to get that in to the pictures). The LED's only affect the OD channel, not the clean. So whatever got damaged, got damaged before you removed C12. It's not ruined per se, but you need to approach things with a level head. Perhaps you could check whether any traces got lifted from the underside board? Pay close attention to the polarity as outlined before. You don't need the original LEDs, any pair of red LEDs will get you "roughly" the same sound, and as stated before, you can experiment with colour or in fact just regular diodes. I don't really consider worth having, but should also be relatively easy to restore. The LEDs are only important for the OD channel, which. That should get your clean channel working again. I'll sort of take it that you're not world's greatest with a soldering iron? If you're comfortable with one, I would suggest cleaning out the leftover bits of of the capacitor C12 and LD2, LD3, then reinstalling C12 (if possible, else another non-polarized cap within about 20% of the original value should work). (I think, you might not have enough posts yet, in which case just the video ID is enough, we'll figure the rest out).Ĭoming back to the problem at hand, well. Well, you could share a Youtube link, for example. Why did you remove C12? I can understand bypassing C6 for example to avoid the low filter if you hook up a cab/other speaker.ĭo you get 'full volume' when you press the channel selector switch in 'half way' ? The circuit now consists of a 1N4148, a 1N4001 and a 0.001uF ceramic capacitor to smooth the effect slightly. Instead, LD3 (the second LED in the overdrive circuit) has been removed and instead two diodes have been installed in opposite directions with lower forward voltage than the LEDs. This produces a lot more headroom, but results in opamp clipping at high gain/input. Here's what I documented at the time: Because opamp clipping is generally harsh and potentially even harsher than the LED based overdrive circuit on its own, removing them without a replacement is effectively the same as bypassing the resistor labeled R8 (22K) without engaging the LED's. That's blunt, but I've been here for shits and giggles.Īs for the LED's, I ended up with two non matched diodes and a cap. It does a fair clean sound for SS, and it even does the VOX chime. My advice is give up now, or use it as a learning experience where you can screw things up at a low price tag. I have one of those amps and took it to hell and back trying to find a way of getting a decent dirty sound out of it.
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