Hartke HA5000 parts

[Gizmoaudio]

Trying to pass down a Hartke HA5000 to my grandson, who also plays bass, but it has a compressor pot that the shaft is broke off. I'm trying to find a replacement and went to the Hartke web site and it only connects you with repair centers. I talked with one of them here in Atlanta, Wizard Electronics, and was told that Harke doesn't allow them to sell parts. I asked about service rates and the service will cost more than the amp is worth. Anyone have a solution to how I can obtain this part? It is RV3 on the schematic / PWB. The number on the pot is 4F2 50K. I looked on ebay and searched the web but I don't find that number. It is a dual ganged pot with a switch. I know the European Union has a right to repair law, so I contacted someone in London thinking that might help. I'm waiting on their response. I am fully capable of making the repair since I have been designing electronics as an engineer since 1975. Also, does anyone have a service manual for this model? Any ideas people? Does anyone have a junk one?

 

[eottjake]

This may work? 50K Premium Tone Pot - 50K-4B-CD-KP - Bartolini Pickups & Electronics
Not same product#, but same resistance at least. Bartolini site says it's fine for multi-use (NTMB/NTBT EQ Bass, Mid, Treble), so $8 isn't a bad gamble

 

[yonkrz]

Try this place,not sure they have the exact pot and usually have to order,but this is one of the few places ive seen that do hartke parts. Invalid Link Removed

 

[eniac]

You might want to spend some time at Mouser and see if you can find a match. The part datasheets are typically very helpful wrt dimensions etc.

I pre-selected 2 gang and 50K for you. You can take it the rest of the way.

Link Removed

 

[agedhorse]

Most post with switches are not off the shelf but are custom OEM models.

As an engineer, I would expect that you know this already…

 

[Gizmoaudio]

I used the contact form on the Harke site and they said to check with [email protected]. Waiting on a response from them.

 

[Boneless]

Most post with switches are not off the shelf but are custom OEM models.

As an engineer, I would expect that you know this already…

Drill a hole in the panel, wire a regular switch to the switch pins and use any 50K dual gang pot (linear or logarithmic?).

 

[Flamingo21]

I know the European Union has a right to repair law, so I contacted someone in London thinking that might help.

Just pointing out here that since Brexit, London isn't in the European Union.

 

[Bighands Bill]

Is it still usable as is? If not can you bypass it and not use the compressor?

 

[eniac]

Re. what Boneless said, back in my tech school days (and the days of hardcopy Allied Electronics catalogs) we'd get in all kinds of electronics for repair (parts-only charge, for student training). TVs, radios, stereo gear. I'd say maybe 1/4 of the time we'd make a non-factory part work and the result was often superior to what the manufacturer did. In that school, we had a WWII vet instructor who asked a baffled VN vet student who'd searched the catalogs and couldn't find an exact-match part for a failed one and had just given up, "If I held a 1911 to your head and said, 'Find the closest thing in those catalogs and somehow make it work or else,' could you do it?" Of course the guy said yes he could. The instructor said, "Then the problem isn't one of part availability. The problem is the decisions you make."

I mean, WHAM. Probably one of the most valuable life lessons I've ever learned.

 

[Zooberwerx]

Is it still usable as is? If not can you bypass it and not use the compressor?

My thoughts exactly. If functional otherwise, I'd cap it and buy a Joyo Scyllo comp. FWIW: the resident comp fell short of my favored "one knobby jobbies".

Riis

 

[Snibborwocky]

I might be wrong here but I rarely if ever, have seen anyone actually using the compressor setting on their Hartke HA amps. I have a 3500 and always keep it in the off position. Most players I assume, don't use a compressor or they have a pedal version instead of the amp option. But I get it if you just want to fix it to restore it to it's original state.

 

[agedhorse]

Drill a hole in the panel, wire a regular switch to the switch pins and use any 50K dual gang pot (linear or logarithmic?).

Totally hack repair IMO.

The parts are available to authorized service providers, but because of bad experiences with customers, most won’t sell electronic parts to end users. Frankly, from the end user repairs that I see in my shop, I don’t blame them one bit.

 

[Boneless]

Totally hack repair IMO.

The parts are available to authorized service providers, but because of bad experiences with customers, most won’t sell electronic parts to end users. Frankly, from the end user repairs that I see in my shop, I don’t blame them one bit.

It is a hack by definition. If you can procure the original part, that's better of course. But a hack is sometimes better than the headache of dealing with byzantine, user-hostile policies. I hope the OP can actually manage to get hold of that pot.

(Software people have a more, erm, cavalier approach... and no, "patch it later" is not really a solution, but there are countless hacks holding infrastructure together all over the place. And foundational pillars of today's technology would never have existed without hacks )

 

[Bass Jones]

Here's a spare board for an HA3500 which shares the same compressor circuit but it's over $50 with shipping. And you'll still need to find another plastic knob. Hartke HA3500 Parts - Original Main Board for model 3500B / 5000 / 7000B | eBay

I would just pass it on as is. Will he really care? Make up a cool story about how you broke the knob off partying with amorous groupies after a gig.

 

[agedhorse]

Note that those are 20mm shaft length pots, 15mm is much more common but won't work for that application. The switched pot is absolutely an OEM version.

 

[Gizmoaudio]

So I've emailed [email protected] two times and got no replies either time. Really rude to not even respond at all. So much for support. They give none.

 

[basvox]

Totally hack repair IMO.

The parts are available to authorized service providers, but because of bad experiences with customers, most won’t sell electronic parts to end users. Frankly, from the end user repairs that I see in my shop, I don’t blame them one bit.

to me, anything that I own and has parts that are not available gets gutted. I will NEVER pay $100 for a potmeter, no matter if it was Jimi's, made of unobtanium or whatever. Using idiot repairs as excuse: unacceptable. Stay away from brands using exotic parts, period.

 

[basvox]

So I've emailed [email protected] two times and got no replies either time. Really rude to not even respond at all. So much for support. They give none.

Have they responded yet?

 

[basvox]

It is a hack by definition. If you can procure the original part, that's better of course. But a hack is sometimes better than the headache of dealing with byzantine, user-hostile policies. I hope the OP can actually manage to get hold of that pot.

(Software people have a more, erm, cavalier approach... and no, "patch it later" is not really a solution, but there are countless hacks holding infrastructure together all over the place. And foundational pillars of today's technology would never have existed without hacks )

you're right about software developers sometimes having to think out of the box. I worked in European and US IT companies. They like creative minds. Hackers are our best protection! as they find holes abusers could exploit.