Sharp VZ-3000 - UK Vintage Radio Repair and Restoration Discussion Forum

lightning · 24th May 2022, 1:52 pm

ls anyone familiar with the Sharp Vertical Play boom box, l have repaired these many years ago when it was mostly things like drive belts.

I've a customer called me and he has one that plays the record fine on side A but the sound is "muffled" on side B
Side B uses a separate arm and stylus.

He's changed the stylus with no improvement. Before l take this in, l need to figure out if there's any realistic chance of me being able to repair it.

Alternatively, is there someone on here who would take it on? l could pass on your number to the guy.

l remember these being a bit of a beast to take apart and work on.

G6ONEDave · 24th May 2022, 6:00 pm

Might be worth checking that the B side stylus is correctly located into it's cartridge. You never know you might get lucky.

Dave

lightning · 25th May 2022, 3:30 pm

Thank you for the suggestion.

He says he's swapped the stylus and it made no difference.

cjwhoishe · 27th May 2022, 10:16 am

The problem is most likely to be the relay which switches between the 2 cartridges. I think the A side uses the NC contacts of the relay and the B side uses the NO contacts. The NO contacts are probably contaminated.
If it is like the RP114 relay then it is a strange physical pinout and not readily available, I fitted a little adapter board and a more easily available relay on my RP114.

24th May 2022, 1:52 pm	#1
lightning Heptode Join Date: Nov 2008 Location: Stockport, Cheshire, UK. Posts: 715	Sharp VZ-3000 ls anyone familiar with the Sharp Vertical Play boom box, l have repaired these many years ago when it was mostly things like drive belts. I've a customer called me and he has one that plays the record fine on side A but the sound is "muffled" on side B Side B uses a separate arm and stylus. He's changed the stylus with no improvement. Before l take this in, l need to figure out if there's any realistic chance of me being able to repair it. Alternatively, is there someone on here who would take it on? l could pass on your number to the guy. l remember these being a bit of a beast to take apart and work on.

24th May 2022, 6:00 pm	#2
G6ONEDave Octode Join Date: Dec 2019 Location: Owston Ferry, North Lincolnshire, UK. Posts: 1,704	Re: Sharp VZ-3000 Might be worth checking that the B side stylus is correctly located into it's cartridge. You never know you might get lucky. Dave __________________ Quote "All is hyperthetical, until it isn't!" (President Laura Roslin, Battlestar Galactica)

25th May 2022, 3:30 pm	#3
lightning Heptode Join Date: Nov 2008 Location: Stockport, Cheshire, UK. Posts: 715	Re: Sharp VZ-3000 Thank you for the suggestion. He says he's swapped the stylus and it made no difference.

27th May 2022, 10:16 am	#4
cjwhoishe Triode Join Date: Jun 2016 Location: Grantham, Lincolnshire, UK. Posts: 27	Re: Sharp VZ-3000 The problem is most likely to be the relay which switches between the 2 cartridges. I think the A side uses the NC contacts of the relay and the B side uses the NO contacts. The NO contacts are probably contaminated. If it is like the RP114 relay then it is a strange physical pinout and not readily available, I fitted a little adapter board and a more easily available relay on my RP114.