Help with 70's record player. Wye Audio 25. - UK Vintage Radio Repair and Restoration Discussion Forum

Jack_Davis · 8th Jun 2019, 2:29 pm

Just picked up a WYE AUDIO 25 turntable with speakers and went to turn it on. Unfortunately it did nothing and seems to have no life. Had a poke around inside but nothing seems worse for wear. If anyone knows about what the problem could be would be greatful

sparkymike · 8th Jun 2019, 3:09 pm

Could be something as simple as the on/off/volume switch not making contact on one or both of the poles.
Work your way back with a voltmeter from the 13 amp plug to the on/off switch and then further back.
Mike.

Jack_Davis · 8th Jun 2019, 3:22 pm

I'll get on to it

AC/HL · 8th Jun 2019, 9:06 pm

Does the neon light up?
Difficult to see, but there appear to be two fuses on the power supply module.

Jack_Davis · 9th Jun 2019, 8:31 am

Quote:

Originally Posted by AC/HL

Does the neon light up?
Difficult to see, but there appear to be two fuses on the power supply module.

There are 2 fuses on the power supply but nothing lights up

Edward Huggins · 9th Jun 2019, 9:04 am

Forgive me for stating the obvious, but have you checked the continuity of those 2 fuses?

'LIVEWIRE?' · 9th Jun 2019, 9:16 am

Stating the obvious, perhaps, but have you checked the fuses (with no power applied) using a multimeter on a low ohms range, or by substitution with known good fuses of the same type and rating? In picture 4 there is a white rectangular object near the PCB at the top left. I can't be certain, despite looking at the picture 2 or 3 times, but is it a plug which is not connected to anything? Some BSR record decks use a 4-way plug & socket to connect the AC Mains to and from the deck switch and, if this supply is interrupted, no power may be reaching the PSU.

Jack_Davis · 16th Jun 2019, 12:08 pm

I have used a voltmeter to check around multiple parts of the record player and no power is being received anywhere and seems very dead. All the fuses seem to be fine so I don't have no idea what's wrong with it

Jack_Davis · 16th Jun 2019, 12:29 pm

I'm having a look at the PCB now and the power wires go straight into the on/volume switch so I think it's not making good connection.

John10b · 16th Jun 2019, 12:55 pm

Firstly check that the Mains socks is ok.
With the mains lead removed from socket, Using your meter on ohms check for continuity from the mains plug into the deck.
Check the on/off switch.
You may have done this already so apologies for stating the obvious.
Cheers
John

Nuvistor · 16th Jun 2019, 1:40 pm

My initial thought was the fuse and wiring in the 13amp plug ok.

AC/HL · 16th Jun 2019, 2:25 pm

I've been caught by that, and if we're all honest...

Jack_Davis · 22nd Jun 2019, 12:55 pm

I've had a look at the board now and everything looks fine. Still no power to anything except that switch. There is no audible click sound when turning the switch on but there was when I poked one of the cables into the switch. This leads me to think that the switch is not making good or any contact. Anyone think I'm on the right track.

Jack_Davis · 22nd Jun 2019, 2:53 pm

Got it working, had to bend the switch back. I suppose it wasn't making good connections however now a new problem has come up as there is no audio output. I tried speakers and headphones but nothing not even hiss. Any ideas?

Edward Huggins · 22nd Jun 2019, 5:32 pm

If there is no hiss or hum then this sounds like a failure of the amplifier as not even one channel appears to be working.
Given your earlier struggles with this, you may need some hands-on, local help.
Much will depend on how you plan to use this and what your expectations of it are.
As it was made, it is a basic, budget type, stereo record player with no Hi Fi pretensions.

Station X · 22nd Jun 2019, 5:47 pm

The PCB at bottom centre of your 4th picture in post #1 appears to be the Power Supply Unit (PSU). I'll hazard a guess that the red and black wires carry power to the amplifier. What DC voltage do you measure across these two wires?

Can we have some close up pictures of the PSU please.

af024 · 22nd Jun 2019, 9:46 pm

Are they Sinclair IC12s that I see before my eyes I wonder?

Nuvistor · 22nd Jun 2019, 10:07 pm

I thought Texas SN series, unfortunately I cannot recall the p/n but were known to fail.

slidertogrid · 22nd Jun 2019, 10:22 pm

Quote:

Originally Posted by Nuvistor

I thought Texas SN series, unfortunately I cannot recall the p/n but were known to fail.

If they are they may not have open circuit protection so If the record player has been powered up without the speakers connected they may be duff. I don't know if this is the case in the Wye circuit but it certainly was when they were used in the Fidelity UA series of audio equipment.
I did loads of under guarantee repairs on the Fidelity units for Woolworths back in the early 1970's. If the customer ran the record player without the speakers plugged in the chips failed. Often they went short sometimes getting very hot and damaging the panel. It seems ridiculous now that they could produce something that was so easy to blow up, the warrantee claims country wide must have been huge...
Rich.

Nuvistor · 22nd Jun 2019, 10:34 pm

The Texas SN76013N series, ( remembered at last) didn’t like the supply voltage being too high, it may have been within specification but lowering the supply a little made them less fragile.
Not sure if it would have cured lack of speaker problem.

Hopefully the ones in the Wye which ever type are ok.

8th Jun 2019, 3:09 pm	#2
sparkymike Octode Join Date: Dec 2006 Location: Colchester, Essex, UK. Posts: 1,075	Re: Help with 70s Turntable Could be something as simple as the on/off/volume switch not making contact on one or both of the poles. Work your way back with a voltmeter from the 13 amp plug to the on/off switch and then further back. Mike.

8th Jun 2019, 3:22 pm	#3
Jack_Davis Triode Join Date: Jan 2019 Location: Bristol, UK. Posts: 25	Re: Help with 70s Turntable I'll get on to it

8th Jun 2019, 9:06 pm	#4
AC/HL Dekatron Join Date: Nov 2003 Location: Heckmondwike, West Yorkshire, UK. Posts: 9,642	Re: Help with 70s Turntable Does the neon light up? Difficult to see, but there appear to be two fuses on the power supply module.

9th Jun 2019, 9:04 am	#6
Edward Huggins Dekatron Join Date: Sep 2015 Location: Southwold, Suffolk, UK. Posts: 8,326	Re: Help with 70s Turntable Forgive me for stating the obvious, but have you checked the continuity of those 2 fuses? __________________ Edward.

9th Jun 2019, 9:16 am	#7
'LIVEWIRE?' Rest in Peace Join Date: Mar 2006 Location: N.W. Oxfordshire(Chipping Norton) Posts: 7,306	Re: Help with 70s Turntable Stating the obvious, perhaps, but have you checked the fuses (with no power applied) using a multimeter on a low ohms range, or by substitution with known good fuses of the same type and rating? In picture 4 there is a white rectangular object near the PCB at the top left. I can't be certain, despite looking at the picture 2 or 3 times, but is it a plug which is not connected to anything? Some BSR record decks use a 4-way plug & socket to connect the AC Mains to and from the deck switch and, if this supply is interrupted, no power may be reaching the PSU.

8th Jun 2019, 2:29 pm	#1
Jack_Davis Triode Join Date: Jan 2019 Location: Bristol, UK. Posts: 25	Help with 70's record player. Wye Audio 25. Just picked up a WYE AUDIO 25 turntable with speakers and went to turn it on. Unfortunately it did nothing and seems to have no life. Had a poke around inside but nothing seems worse for wear. If anyone knows about what the problem could be would be greatful Attached Thumbnails

16th Jun 2019, 12:08 pm	#8
Jack_Davis Triode Join Date: Jan 2019 Location: Bristol, UK. Posts: 25	Re: Help with 70s Turntable I have used a voltmeter to check around multiple parts of the record player and no power is being received anywhere and seems very dead. All the fuses seem to be fine so I don't have no idea what's wrong with it

16th Jun 2019, 12:29 pm	#9
Jack_Davis Triode Join Date: Jan 2019 Location: Bristol, UK. Posts: 25	Re: Help with 70s Turntable I'm having a look at the PCB now and the power wires go straight into the on/volume switch so I think it's not making good connection. Last edited by Jack_Davis; 16th Jun 2019 at 12:36 pm.

16th Jun 2019, 12:55 pm	#10
John10b Nonode Join Date: Nov 2016 Location: Aberaeron, Ceredigion, Wales, UK. Posts: 2,882	Re: Help with 70s Turntable Firstly check that the Mains socks is ok. With the mains lead removed from socket, Using your meter on ohms check for continuity from the mains plug into the deck. Check the on/off switch. You may have done this already so apologies for stating the obvious. Cheers John

16th Jun 2019, 1:40 pm	#11
Nuvistor Dekatron Join Date: Aug 2013 Location: Wigan, Greater Manchester, UK. Posts: 9,431	Re: Help with 70s Turntable My initial thought was the fuse and wiring in the 13amp plug ok. __________________ Frank

16th Jun 2019, 2:25 pm	#12
AC/HL Dekatron Join Date: Nov 2003 Location: Heckmondwike, West Yorkshire, UK. Posts: 9,642	Re: Help with 70s Turntable I've been caught by that, and if we're all honest...

22nd Jun 2019, 12:55 pm	#13
Jack_Davis Triode Join Date: Jan 2019 Location: Bristol, UK. Posts: 25	Re: Help with 70s Turntable I've had a look at the board now and everything looks fine. Still no power to anything except that switch. There is no audible click sound when turning the switch on but there was when I poked one of the cables into the switch. This leads me to think that the switch is not making good or any contact. Anyone think I'm on the right track. Attached Thumbnails

22nd Jun 2019, 2:53 pm	#14
Jack_Davis Triode Join Date: Jan 2019 Location: Bristol, UK. Posts: 25	Re: Help with 70s Turntable Got it working, had to bend the switch back. I suppose it wasn't making good connections however now a new problem has come up as there is no audio output. I tried speakers and headphones but nothing not even hiss. Any ideas?

22nd Jun 2019, 5:32 pm	#15
Edward Huggins Dekatron Join Date: Sep 2015 Location: Southwold, Suffolk, UK. Posts: 8,326	Re: Help with 70s Turntable If there is no hiss or hum then this sounds like a failure of the amplifier as not even one channel appears to be working. Given your earlier struggles with this, you may need some hands-on, local help. Much will depend on how you plan to use this and what your expectations of it are. As it was made, it is a basic, budget type, stereo record player with no Hi Fi pretensions. __________________ Edward.

22nd Jun 2019, 5:47 pm	#16
Station X Moderator Join Date: Jan 2003 Location: Ipswich, Suffolk, IP4, UK. Posts: 21,286	Re: Help with 70's record player. Wye Audio 25. The PCB at bottom centre of your 4th picture in post #1 appears to be the Power Supply Unit (PSU). I'll hazard a guess that the red and black wires carry power to the amplifier. What DC voltage do you measure across these two wires? Can we have some close up pictures of the PSU please. __________________ Graham. Forum Moderator Reach for your meter before you reach for your soldering iron.

22nd Jun 2019, 9:46 pm	#17
af024 Octode Join Date: Jan 2003 Location: Ashby-de-la-Zouch (it's not by the sea) Posts: 1,255	Re: Help with 70's record player. Wye Audio 25. Are they Sinclair IC12s that I see before my eyes I wonder? __________________ Now where on earth did I remove that from?

22nd Jun 2019, 10:07 pm	#18
Nuvistor Dekatron Join Date: Aug 2013 Location: Wigan, Greater Manchester, UK. Posts: 9,431	Re: Help with 70's record player. Wye Audio 25. I thought Texas SN series, unfortunately I cannot recall the p/n but were known to fail. __________________ Frank

22nd Jun 2019, 10:34 pm	#20
Nuvistor Dekatron Join Date: Aug 2013 Location: Wigan, Greater Manchester, UK. Posts: 9,431	Re: Help with 70's record player. Wye Audio 25. The Texas SN76013N series, ( remembered at last) didn’t like the supply voltage being too high, it may have been within specification but lowering the supply a little made them less fragile. Not sure if it would have cured lack of speaker problem. Hopefully the ones in the Wye which ever type are ok. __________________ Frank