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Vintage Audio (record players, hi-fi etc) Amplifiers, speakers, gramophones and other audio equipment. |
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1st Oct 2020, 9:50 pm | #1 |
Tetrode
Join Date: May 2020
Location: Birmingham, West Midlands, UK.
Posts: 85
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Rank Arena 2000GT with a B55
I picked this up today and it’s ****** marvellous...apart from the fact that the sound is really crackly and low volume through one of the ports but the other is a cracker!
Should I try a little contact cleaner initially? |
1st Oct 2020, 10:03 pm | #2 |
Moderator
Join Date: Mar 2012
Location: Fife, Scotland, UK.
Posts: 22,867
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Re: Rank Arena 2000GT with a B55
And a Lenco turntable unit by the looks.
Try switch cleaner in the pots to start with. Operate all the switches and buttons several times as well. It's got a bit of neglect to catch up on. David
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Can't afford the volcanic island yet, but the plans for my monorail and the goons' uniforms are done |
1st Oct 2020, 10:41 pm | #3 |
Tetrode
Join Date: May 2020
Location: Birmingham, West Midlands, UK.
Posts: 85
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Re: Rank Arena 2000GT with a B55
It’s a Lenco B55 and only cost me £20.
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1st Oct 2020, 11:31 pm | #4 |
Octode
Join Date: Jan 2003
Location: Guildford, Surrey, UK.
Posts: 1,959
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Re: Rank Arena 2000GT with a B55
It is quite likely that the low volume problem will be with the blue Philips electrolytic coupling and emitter bypass capacitors in the amplifier having low capacitance. It is a well-known fault with this model. I think they are 100uF.
Ron |
1st Oct 2020, 11:33 pm | #5 | |
Tetrode
Join Date: May 2020
Location: Birmingham, West Midlands, UK.
Posts: 85
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Re: Rank Arena 2000GT with a B55
Quote:
I was really hoping to not have to take this one apart. |
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1st Oct 2020, 11:39 pm | #6 |
Dekatron
Join Date: Nov 2009
Location: Lincolnshire, UK.
Posts: 5,000
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Re: Rank Arena 2000GT with a B55
I agree that it's likely to be a component fault on one of these. I did an Arena amplifier a while ago and from memory I had to replace two electrolytic capacitors and the bad crackle was caused by a solder joint that looked like it hadn't been soldered properly from new - took some finding!
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1st Oct 2020, 11:44 pm | #7 |
Tetrode
Join Date: May 2020
Location: Birmingham, West Midlands, UK.
Posts: 85
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Re: Rank Arena 2000GT with a B55
How easy was it to get into?
It works well Mono. �� |
1st Oct 2020, 11:46 pm | #8 |
Dekatron
Join Date: Nov 2009
Location: Lincolnshire, UK.
Posts: 5,000
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Re: Rank Arena 2000GT with a B55
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2nd Oct 2020, 9:24 am | #9 |
Octode
Join Date: Jan 2003
Location: Guildford, Surrey, UK.
Posts: 1,959
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Re: Rank Arena 2000GT with a B55
Correction to my post #4 - The coupling capacitors in the AF amplifier are 10uF, the emitter bypass caps are 100uF.
The manual is quite helpful as it gives details of several test parameters for each channel - e.g. insert 120mV rms 1kHz sinewave into the tape input, measure 6.9V rms across 3.2 ohm load applied to speaker outputs. You can do this test initially without dismantling. Ron Last edited by ronbryan; 2nd Oct 2020 at 9:30 am. |
2nd Oct 2020, 9:29 am | #10 | |
Tetrode
Join Date: May 2020
Location: Birmingham, West Midlands, UK.
Posts: 85
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Re: Rank Arena 2000GT with a B55
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2nd Oct 2020, 9:35 am | #11 |
Octode
Join Date: Jan 2003
Location: Guildford, Surrey, UK.
Posts: 1,959
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Re: Rank Arena 2000GT with a B55
I've attached an extract from the manual (post #9) showing the audio printed circuit board. Probably you should try to see if a local Forum member can help you fix it, unless you make trips to Guildford.
Ron |
2nd Oct 2020, 9:40 am | #12 |
Tetrode
Join Date: May 2020
Location: Birmingham, West Midlands, UK.
Posts: 85
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Re: Rank Arena 2000GT with a B55
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2nd Oct 2020, 3:43 pm | #13 |
Dekatron
Join Date: Sep 2015
Location: Southwold, Suffolk, UK.
Posts: 8,327
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Re: Rank Arena 2000GT with a B55
This is really worth fixing. You've got it almost for free anyway, and if you're not confident to tackle this, why not ask a West Midlands Member to assist. And wherein you will not get ripped off. I'm aware of the Lockdown issues, but it may well be worth your wait. This will give a super sound when matched to efficient speakers.
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Edward. |
2nd Oct 2020, 5:09 pm | #14 | |
Tetrode
Join Date: May 2020
Location: Birmingham, West Midlands, UK.
Posts: 85
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Re: Rank Arena 2000GT with a B55
Quote:
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2nd Oct 2020, 5:15 pm | #15 |
Dekatron
Join Date: Sep 2015
Location: Southwold, Suffolk, UK.
Posts: 8,327
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Re: Rank Arena 2000GT with a B55
Yes, it's easy. Just Post in "Repair and Restoration Services Wanted" from the Landing Page above on this Site.
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Edward. |
2nd Oct 2020, 10:24 pm | #16 |
Tetrode
Join Date: May 2020
Location: Birmingham, West Midlands, UK.
Posts: 85
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Re: Rank Arena 2000GT with a B55
Happy to try myself if it’s doable but I’ve also posted to the other section.
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3rd Oct 2020, 10:22 pm | #17 |
Tetrode
Join Date: May 2020
Location: Birmingham, West Midlands, UK.
Posts: 85
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Re: Rank Arena 2000GT with a B55
I’m going to have a proper look at it tomorrow, I haven’t had chance to yet but I do know that it’s fairly decent with only one speaker so it could be great.
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4th Oct 2020, 9:32 pm | #18 |
Tetrode
Join Date: May 2020
Location: Birmingham, West Midlands, UK.
Posts: 85
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Re: Rank Arena 2000GT with a B55
Yes, it’s definitely an issue with one of the channels, it’s a real shame because the one that works sounds great.
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