Now, why on earth would I be sharing a video about a food stall? Well, one of the reasons is because Juraini @Along, the affable head honcho, really loves music. On any given day, you'll hear anything from dangdut to classic rock playing on her radio.
Then again, service is great, prices are reasonable and the nasi ayam [chicken rice] is totally amazing. You can also order various dishes with white rice if nasi ayam is not your thing. So, if you're ever in Taman Impianku around lunchtime, do drop by Gerai Nasi Ayam Sedap Adinda for a truly satisfying meal that won't put a dent in your wallet.
Say hello to Mohamad Tojid and Normah, whom I first met way back in 1984; the year I started teaching in Bukit Goh. Tojid, who used to play keyboards in our band, now handles audio for wedding and karaoke gigs. He's never alone though, for Normah is always by his side. Now known as DJ Erma, she handles emcee and of course, deejay duties. This is one formidable husband and wife team, I tell ya!
This video is about the planned mods on an SG-looking object. These mods include a pair of "inspired-by-P90" Wilkinson pickups, a handmade faux tortoiseshell pickguard, Bigsby-licensed vibrato tailpiece, a TOM-style roller bridge, Guyker brass roller nut; and custom truss rod cover.
Here's a sunburst RC Stromm P-Style four-string bass that's been sent in for an evaluation and repair estimate minus a gig bag. Although I've immediately noticed quite a few issues that need to be addressed, the owner is only worried about the high action and general unplayability. Well, brother, there's a whole lot more to be worried about.
As the bass still has strings on, I've plugged it into an amp just to see if it works. The good news is that it does make a sound. The bad news is that the output stays the same with the volume control dimed, fully off, or anywhere in between. There's definitely something wrong with the wiring, the volume pot itself; or both. Watch the short video below, and you'll see what I mean.
Now that introductions are over and done with, let's take a closer look at the hardware. Starting at the headstock end, you'll notice that the tuners and lone string retainer are cruddy and in dire need of servicing. To make matters worse, all sixteen mounting screws are terribly corroded.
Tuners and String Retainer
Rusty Tuner Mounting Screws
Moving on to the strap buttons, there's a remarkable similarity in condition when compared to the tuners and string retainer. All that corrosion and crud suggests that this bass has been sitting on a stand or hanging on a wall collecting dust. Which makes a lot of sense since it doesn't even have a gig bag.
Upper Horn Strap Button
Rear End Strap Button
Think I'll take the three-ply pickguard off now and see if there are any surprises lurking underneath. But wait, I can't even unfasten the screws. Guess why? Yes, sir, it's because the slots on all eleven are too corroded for a screwdriver to get a firm grip on. Half-an-hour later, and I've managed to unscrew the lot. There's rust spots and loads of grime on the underside of the pickguard, but nothing a good scrub with soap and water can't take care of.
Eleven Rusty Pickguard Screws
Underside of Pickguard - Image 1
Underside of Pickguard - Image 2
Underside of Pickguard - Image 3
The bridge on this bass is a typical vintage-style with four barrel saddles. There's a nice blanket of cobwebs and dust coating every square inch, so thick that it looks like fur. Let's unscrew the saddles and see if anything needs to be serviced or replaced. Well, I can't say I'm surprised. The intonation screws, springs and height adjustment hex screws are cruddy, discolored, and corroded. It's a wonder I managed to get them off at all.
E and A Saddles
A, D and G Saddles
Saddles, Screws and Springs
Cobwebbed Bridge Plate
Close-Up of Bridge Plate
Rear End of Bridge Plate
Back to the pickguard, then. As expected, electronics comprise nondescript volume and tone mini pots, as well as a generic open frame output jack. The wiring has been duly checked, and found to be sound. This being the case, the root cause of aforementioned output anomaly is definitely the volume pot itself.
Mini Pots and Output Jack
Close-Up of Volume and Tone Pots
Close-Up of Output Jack
The split P-style pickup is most certainly in working order, as can be heard in the video at the beginning of this post. Are there any issues of concern, then? Oh yes, there are. For one, there's the sheer amount of dust and grime coating the covers. Then again, those rusty height adjustment screws and pole pieces cannot be ignored.
Grimy Pickup Cover and Rusty Screw
Rusty Pole Pieces - Upper Pickup
Rusty Pole Pieces - Lower Pickup
Last but not least, something needs to be said about the fretboard and frets. Yes, that's a pretty cruddy slab of wood we're looking at. The tarnished frets, meanwhile, display the typical discoloration brought about by oxidation. If you guessed that whoever used to play this bass never bothered to wipe down the strings and fretboard after use, you're spot on!
The title says it all. Here's a Samick Greg Bennett Design Corsair Series CR1 four-string bass that's been through hell and come back totally petrified. Now, here's the kicker -- the owner's only concern is that his bass "makes no sound," and doesn't seem to realize that it's unplayable as is. The background music for this video is courtesy of Alex Wit from Kołobrzeg, Poland.
This Ibanez GIO four-string bass buzzes loudly but makes no sound when plugged into an amp. The bass is equipped with two humbuckers and controls for neck volume, bridge volume, and master tone. Initial checks suggest that neither the pickups nor controls are in working order.
Pickups Do Not Work
Controls Do Not Work
Evaluating Electronic Components
Following this, I scrutinize the electronics and am not too happy with what I find. For one, both the output jack and jack plate are terribly rusty. The jack plate can be saved, but the jack itself needs to be replaced. Then again, there's the three CF mini pots. Now, I have nothing against mini pots in general. However, I've had to replace these CF [Cherk Fan] pots lots of times, and dare say that they're quirky and prone to failure.
Rusty Output Jack
Badly Tarnished Jack Plate
CF 500K Neck Volume Pot
CF 500K Bridge Volume Pot
CF 500K Tone Pot
Wiring Issues
Perhaps the most serious issues lie in the wiring. To say that there are anomalies would be an understatement, methinks. There are clear signs that the wiring has been tampered with, such as disconnected wires left dangling, exposed spliced joints, and iffy resoldering. And, as expected, continuity checks with a multimeter confirm my suspicions that the integrity of the circuit has been seriously compromised.
Neck Humbucker Series Link
Disconnected Ground
Bridge Humbucker Series Link
Disconnected Wires Twisted Together
Ground Continuity Check
Work Begins
It's now time to get to work. The electronics have been totally desoldered, and the output jack assembly taken apart. Thankfully, servicing the crusty jack plate has been made easier with the help of a polishing wheel and jewelers' rouge.
Desoldered Electronics
Empty Control Cavity
Output Jack Assembly Taken Apart
Servicing the Jack Plate and Control Knobs
Fixing the Pickups
Let's tackle the pickups, then. Desoldering the two pickups has left me with a tangled mess of wires, some of which are way too short to be reused as is.
Short and Tangled Pickup Leads
As such, I've had cut away part of the cable jackets to expose fresh leads to work on. And guess what? There's a disconnected green lead buried deep within the cable, connected to nothing. In any case, being humbuckers, there are four leads and a braided ground inside each cable. These leads are colored white, black, red, and green.
Pickup Leads Separated and Identified
With the aid of my trusty multimeter, I've figured out that black is hot, red and white soldered together are the series link, and green should be soldered to the braided ground. So, all this while, the configuration was correct, except for the disconnected green lead.
Pickup Leads Reconfigured
OK then, I've the reconfigured the wiring for both pickups. Here's the neck humbucker as an example. Testing its output with a multimeter set to 0.1 DCV and nut wrench shows that the pickup now works, and it's the same for the bridge humbucker. Yes indeed, these two have come back to life. Oh, happy day!
Testing the Neck Pickup - It Works!
Completing the Job
Let's get back to the control cavity now. Replacements comprise three full-sized Alpha A500K pots and a generic output jack. Rewiring has been carried out with red [hot] and yellow [ground] silicon-jacketed wire, as I'm all out of black. As final testing through an amp has yielded pleasing results, I do declare that this dead Ibanez GIO bass has been resurrected.