Hi!
I´m Michele from Italy. I have in shop a Hiwatt DR-103 from 1978. I have open the amp for a small service and i notice a small PCB board that I think is unusual for an Hylight era amp.
Can someone help me to understand this MOD?
Thank you so much!
Michele
Strange PCB in DR-103
Moderator: Mods
- Dr.HI-TONE
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Re: Strange PCB in DR-103
I can not see the images
- OldSchoolDave
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Re: Strange PCB in DR-103
Hi Michele!
I was able to access the images if I copied and pasted them from the "Reply" window. Let's see if these direct links work better:
https://cdn1.imggmi.com/uploads/2019/12 ... a-full.jpg
https://cdn1.imggmi.com/uploads/2019/12 ... e-full.jpg
https://cdn1.imggmi.com/uploads/2019/12 ... 0-full.jpg
https://cdn1.imggmi.com/uploads/2019/12 ... 9-full.jpg
https://cdn1.imggmi.com/uploads/2019/12 ... 8-full.jpg
https://cdn1.imggmi.com/uploads/2019/12 ... 1-full.jpg
https://cdn1.imggmi.com/uploads/2019/12 ... c-full.jpg
https://cdn1.imggmi.com/uploads/2019/12 ... 6-full.jpg
That is very unusual. Instead of the Turret Strip in the Input section, there are two smaller boards, one with turrets, the other a blank drilled for the components. I would not call those PCB, as they do not appear to have their routing etched in place. I have not seen this on any vintage HIWATT, but the components appear to be era-correct. Dr.HI-TONE, have you run across something like this?
Dave
I was able to access the images if I copied and pasted them from the "Reply" window. Let's see if these direct links work better:
https://cdn1.imggmi.com/uploads/2019/12 ... a-full.jpg
https://cdn1.imggmi.com/uploads/2019/12 ... e-full.jpg
https://cdn1.imggmi.com/uploads/2019/12 ... 0-full.jpg
https://cdn1.imggmi.com/uploads/2019/12 ... 9-full.jpg
https://cdn1.imggmi.com/uploads/2019/12 ... 8-full.jpg
https://cdn1.imggmi.com/uploads/2019/12 ... 1-full.jpg
https://cdn1.imggmi.com/uploads/2019/12 ... c-full.jpg
https://cdn1.imggmi.com/uploads/2019/12 ... 6-full.jpg
That is very unusual. Instead of the Turret Strip in the Input section, there are two smaller boards, one with turrets, the other a blank drilled for the components. I would not call those PCB, as they do not appear to have their routing etched in place. I have not seen this on any vintage HIWATT, but the components appear to be era-correct. Dr.HI-TONE, have you run across something like this?
Dave
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Re: Strange PCB in DR-103
it looks like a converted slave amp
- OldSchoolDave
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- Joined: Wed Nov 14, 2007 9:24 pm
- Location: HP, NC USA
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Re: Strange PCB in DR-103
Ah, that would explain it.
Dave
Re: Strange PCB in DR-103
Oh yes. Do you think this mod was made by Hiwatt? Because i see same component, same wire, same paint on the solder point. I think that someone in the recent past modified one more time this amp.
This amp sounds good and with no Hum but a little dummy compared to my Dr-504 replica.
Michele
- Dr.HI-TONE
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- Joined: Wed Nov 14, 2007 8:51 pm
- Location: HIWATT Valley
Re: Strange PCB in DR-103
I am fairly confident that this amp in this current state was not made by HIWATT.
Much of the wiring and components are not original.
Much of the wiring and components are not original.
Re: Strange PCB in DR-103
I agree. Although the PCB-mounted parts look period-correct, I'm sure if Hiwatt did the conversion, they be using a turret board, not a PCB.