No sound from Bass

[Azagorath]

I didn't lose sleep over this, last night, but it did chase me in a couple of dreams...

From Musicians Friend:

Pickups

Active or passive pickups: Passive
Pickup configuration: HS
Neck: Diamond P
Middle: Not applicable
Bridge: Diamond SuperRock MM Humbucker
Brand: Schecter
Series or parallel: Parallel
Active preamp: Not applicable
Special electronics: Defeatable 2-band active EQ

No matter what you call it, the problem was isolated to the 'control circuit', so good job, all!

@Azagorath , when the bass was working properly, what would you do to defeat the active 2 band EQ? Push-Pull? I still have not received an answer regarding 'passive' (without battery, or otherwise) operation...

As evidenced by the description in bold, if the 'preamp' is N/A, what enhancement(s) does an active EQ provide over a passive control circuit... I would think the controls would operate, whether active, or passive.

That's cool if you want to do the upgrade... sounds like a great choice! I'd still take a closer look at that control circuit... the problem may jump out at you. Any simultaneous 'event' occur about the same time your bass took a dump? And no, we can't blame the eclipse...

i would honestly blame battery inserted the wrong way caused that chaos , i must have done that on a rush , however i think i will replace the schecter default preamp with something that might bring me the tone i look for . This bass is awesome to play worth the upgrade

 

[Azagorath]

(Buying stock shares of Duracell, as we speak)... If it were me, I would make 'passive' a part of the solution... update, when you can!

i was looking at Bartolini circuit that has passive /active switch actually .

 

[Azagorath]

Sounds like it's shop time then, unless you want to go buy a meter and start learning basic electronics.
Good luck.

its worth the upgrade and honestly i can't stay without my 5 for long , i lose sleep over it haha

 

[Spidey2112]

i was looking at Bartolini circuit that has passive /active switch actually .

Excellent!

 

[Westsailor]

Did you let it run out of notes? Take it to a luthier and they can check and fill it back up for you.

OK... I'll let myself out now....

 

[Killed_by_Death]

If it sounds ok with the pickups wired direct, maybe you could get by w/o a preamp.
Do you ever turn either of the EQ knobs to boost?
If not, you don't really need a preamp & could just use passive treble & bass cut knobs.

OTOH, if you're going to replace the preamp, I'd go big & get a 3-band preamp with sweepable mids, & use two concentric stacked pots to control the EQ.

With two concentric pots, you could have control of all 4-aspects of a 3-band EQ with sweepable mids.

 

[Reedt2000]

i would honestly blame battery inserted the wrong way caused that chaos , i must have done that on a rush , however i think i will replace the schecter default preamp with something that might bring me the tone i look for . This bass is awesome to play worth the upgrade

So the battery was installed backwards? Don't the connectors make that impossible? My thought while reading this thread is that a potentiometer may have rotated so that a terminal touched the cavity wall which is probably painted with shielding paint. It would ground out the circuit and be hard to spot. Take a look and see if any of the pots are close enough that their contacts may be touching the inside wall of the control cavity.

 

[Killed_by_Death]

RE: making sure nothing is grounding out inside the cavity

take the pickguard off so that there's no way any of leads can be grounding against anything in the cavity & see if you get any sound from the pickups
of course, you'll have to reconnect the pickup leads to where they originally were

add: come to think of it, if it was a grounding out issue, it wouldn't have just stopped working for no reason, unless you'd been inside there mucking around,,,,
or if one of the pots is loose & you spun it so far that the contacts are now touching something they should not be

 

[byacey]

So the battery was installed backwards? Don't the connectors make that impossible? My thought while reading this thread is that a potentiometer may have rotated so that a terminal touched the cavity wall which is probably painted with shielding paint. It would ground out the circuit and be hard to spot. Take a look and see if any of the pots are close enough that their contacts may be touching the inside wall of the control cavity.

Fumbling with the connector and battery in dim lighting, it's entirely possible to momentarily make contact with the polarity reversed. Tantalum caps, many opamps and transistors will not withstand reversed polarity for even a short period of time.

I'm not saying this is exactly what happened, but with the info provided, something of this nature has caused a dead short across the battery supply.

 

[Killed_by_Death]

note to self: be vewy vewy careful when changing the battery

 

[Azagorath]

If it sounds ok with the pickups wired direct, maybe you could get by w/o a preamp.
Do you ever turn either of the EQ knobs to boost?
If not, you don't really need a preamp & could just use passive treble & bass cut knobs.

OTOH, if you're going to replace the preamp, I'd go big & get a 3-band preamp with sweepable mids, & use two concentric stacked pots to control the EQ.

With two concentric pots, you could have control of all 4-aspects of a 3-band EQ with sweepable mids.

I actually thought about it since i don't use mids much beside i do my tone refining on computer after i record so technically the most important knobs for me bass and treble.

 

[Azagorath]

So the battery was installed backwards? Don't the connectors make that impossible? My thought while reading this thread is that a potentiometer may have rotated so that a terminal touched the cavity wall which is probably painted with shielding paint. It would ground out the circuit and be hard to spot. Take a look and see if any of the pots are close enough that their contacts may be touching the inside wall of the control cavity.

i looked very close to make sure nothing touching , maybe i put the battery wrong for a brief second however even before that happen i would hear like hum if the guitar came close to my computer or even my monitor . Something with the preamp not right. But honestly i would upgrade schecter factory preamp. There not that good

 

[Azagorath]

RE: making sure nothing is grounding out inside the cavity

take the pickguard off so that there's no way any of leads can be grounding against anything in the cavity & see if you get any sound from the pickups
of course, you'll have to reconnect the pickup leads to where they originally were

add: come to think of it, if it was a grounding out issue, it wouldn't have just stopped working for no reason, unless you'd been inside there mucking around,,,,
or if one of the pots is loose & you spun it so far that the contacts are now touching something they should not be

no i have never touched anything inside before that happen , and schecter is not sloppy when it comes to wiring , i own 2 schecters . There preamps however are not that good.

 

[Azagorath]

So i found 2 preamps that i liked from price perspective which are Bartolini and Glockenklang , trying to narrow my search down to the tone i'm looking for in my Metal playing
Glockenklang - 2 Band - Best Bass Gear

Invalid Link Removed

has anyone used Glockenklang Before ?

 

[Fabian Mayen]

Hi man, just read your tread. How did you solve it? Did you go Bart or Glock? I have this 5 strings Stealth, love it except the pre. Also been thinking wiring passive (maybe VVTT) but I'm no expert, or maybe changing pickups but havent found the right choice size-wise. Any sugestions? Cheers mate!