A before and after on a Rock Ola amp - UK Vintage Radio Repair and Restoration Discussion Forum

vinrads · 26th Aug 2022, 2:24 pm

This is one of many of these amps I have restored , the two capacitors in the ht doubler cct are now in the cardboard tube 2x 220mf plus 4x 22uf replacing the other capacitor on top these are kept for the looks , a must on these amps is to solder a wire from chassis to the earth tag on the multi way tag strip, this is a cure for hum when the earth tag becomes high resistance ,to the chassis due to corrosion , the owner does the printing , Its good for a few more years now . Mick.

ms660 · 26th Aug 2022, 2:44 pm

Lawrence.

sortedradio · 26th Aug 2022, 2:58 pm

Hi Mick, I have restored and repaired quite a few of these myself. That looks a great job and should bring joy to the ears for years to come!

McMurdo · 26th Aug 2022, 3:27 pm

Looks good. In this neck of the woods there's a shop that restores jukeboxes and they usually gut the amps and fit chinese class-d modules off ebay. Which I think is a shame.

Welsh Anorak · 26th Aug 2022, 4:12 pm

I think the word 'restores' might be a tad generous. What the OP's done IS a restoration!

fetteler · 26th Aug 2022, 5:45 pm

Bloomin' luverly!

Well done

Steve.

G6Tanuki · 26th Aug 2022, 5:50 pm

Lovely! Clearly you have put loads of time and effort and skill into this. I only hope the owner appreciates your 'recovery' of what looks to have started off as a bit of a basket-case.

I'm fascinated by the plastic 3-pin Molex-type connectors - not used to seeing them in valve-era equipment.

fetteler · 26th Aug 2022, 6:51 pm

I wonder if there's a decent way of reproducing the original chassis labeling? It's a shame that the lettering is usually sacrificed when the chassis are refinished, seems to me it's a bit of a perennial problem with projects like this.

Steve.

vinrads · 26th Aug 2022, 10:19 pm

Regarding the lettering , they have been reproduced as original in this case the owner will stick them on ,they are the peel and stick type , I like to do them normally then a couple of coats of clear lacquer does the job , Mick.

fetteler · 26th Aug 2022, 10:59 pm

Excellent Mick, you are way ahead of me - what's the peel and stick type? Is it a printer friendly clear self adhesive film?

Steve.

joebog1 · 26th Aug 2022, 11:04 pm

Very very nice job!!! 10 points.

Joe

Analogue man · 27th Aug 2022, 9:56 am

Quote:

Originally Posted by fetteler

Excellent Mick, you are way ahead of me - what's the peel and stick type? Is it a printer friendly clear self adhesive film?

Steve.

No it is properly called dry print lettering the most common of which is Letraset but cheaper versions can be found eBay.

deliverance · 27th Aug 2022, 10:21 am

Cracking job Mick . I wonder how many restorations you have done.

vinrads · 27th Aug 2022, 10:33 am

Here is an example of the lettering, even better when a few coats of clear lacquer is applied, Mick.

26th Aug 2022, 2:24 pm	#1
vinrads Dekatron Join Date: Feb 2009 Location: Chesterfield, Derbyshire, UK. Posts: 3,754	A before and after on a Rock Ola amp This is one of many of these amps I have restored , the two capacitors in the ht doubler cct are now in the cardboard tube 2x 220mf plus 4x 22uf replacing the other capacitor on top these are kept for the looks , a must on these amps is to solder a wire from chassis to the earth tag on the multi way tag strip, this is a cure for hum when the earth tag becomes high resistance ,to the chassis due to corrosion , the owner does the printing , Its good for a few more years now . Mick. Attached Thumbnails Last edited by vinrads; 26th Aug 2022 at 2:49 pm.

26th Aug 2022, 2:44 pm	#2
ms660 Dekatron Join Date: Apr 2011 Location: Cornwall, UK. Posts: 13,454	Re: A before and after on a Rock Ola amp Lawrence.

26th Aug 2022, 2:58 pm	#3
sortedradio Heptode Join Date: Jan 2008 Location: Sheffield, South Yorkshire, UK. Posts: 654	Re: A before and after on a Rock Ola amp Hi Mick, I have restored and repaired quite a few of these myself. That looks a great job and should bring joy to the ears for years to come! __________________ Martin BVWS member GQRP Club

26th Aug 2022, 3:27 pm	#4
McMurdo Dekatron Join Date: Jun 2009 Location: Staffordshire Moorlands, UK. Posts: 5,269	Re: A before and after on a Rock Ola amp Looks good. In this neck of the woods there's a shop that restores jukeboxes and they usually gut the amps and fit chinese class-d modules off ebay. Which I think is a shame. __________________ Kevin

26th Aug 2022, 4:12 pm	#5
Welsh Anorak Dekatron Join Date: Apr 2005 Location: North Wales, UK. Posts: 6,916	Re: A before and after on a Rock Ola amp I think the word 'restores' might be a tad generous. What the OP's done IS a restoration! __________________ Glyn www.gdelectronics.wales

26th Aug 2022, 5:45 pm	#6
fetteler Octode Join Date: Jul 2011 Location: Staffordshire Moorlands, UK. Posts: 1,474	Re: A before and after on a Rock Ola amp Bloomin' luverly! Well done Steve. __________________ Those who lack imagination cannot imagine what is lacking...

26th Aug 2022, 5:50 pm	#7
G6Tanuki Dekatron Join Date: Apr 2012 Location: Wiltshire, UK. Posts: 13,995	Re: A before and after on a Rock Ola amp Lovely! Clearly you have put loads of time and effort and skill into this. I only hope the owner appreciates your 'recovery' of what looks to have started off as a bit of a basket-case. I'm fascinated by the plastic 3-pin Molex-type connectors - not used to seeing them in valve-era equipment. __________________ I'm the Operator of my Pocket Calculator. -Kraftwerk.

26th Aug 2022, 6:51 pm	#8
fetteler Octode Join Date: Jul 2011 Location: Staffordshire Moorlands, UK. Posts: 1,474	Re: A before and after on a Rock Ola amp I wonder if there's a decent way of reproducing the original chassis labeling? It's a shame that the lettering is usually sacrificed when the chassis are refinished, seems to me it's a bit of a perennial problem with projects like this. Steve. __________________ Those who lack imagination cannot imagine what is lacking...

26th Aug 2022, 10:19 pm	#9
vinrads Dekatron Join Date: Feb 2009 Location: Chesterfield, Derbyshire, UK. Posts: 3,754	Re: A before and after on a Rock Ola amp Regarding the lettering , they have been reproduced as original in this case the owner will stick them on ,they are the peel and stick type , I like to do them normally then a couple of coats of clear lacquer does the job , Mick.

26th Aug 2022, 10:59 pm	#10
fetteler Octode Join Date: Jul 2011 Location: Staffordshire Moorlands, UK. Posts: 1,474	Re: A before and after on a Rock Ola amp Excellent Mick, you are way ahead of me - what's the peel and stick type? Is it a printer friendly clear self adhesive film? Steve. __________________ Those who lack imagination cannot imagine what is lacking...

26th Aug 2022, 11:04 pm	#11
joebog1 Banned Join Date: Jun 2015 Location: Mareeba, North Queensland, Australia Posts: 2,704	Re: A before and after on a Rock Ola amp Very very nice job!!! 10 points. Joe

27th Aug 2022, 10:21 am	#13
deliverance Heptode Join Date: Apr 2015 Location: Manchester, UK. Posts: 710	Re: A before and after on a Rock Ola amp Cracking job Mick . I wonder how many restorations you have done.

27th Aug 2022, 10:33 am	#14
vinrads Dekatron Join Date: Feb 2009 Location: Chesterfield, Derbyshire, UK. Posts: 3,754	Re: A before and after on a Rock Ola amp Here is an example of the lettering, even better when a few coats of clear lacquer is applied, Mick. Attached Thumbnails