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Vintage Audio (record players, hi-fi etc) Amplifiers, speakers, gramophones and other audio equipment. |
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6th Dec 2017, 8:15 pm | #1 |
Retired Dormant Member
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Garrard 4HF Pitch control
Hi I have a Garrard 4HF deck but unfortunately the pitch control (I think that's what its called) isn't working the 4 speeds work fine but I can't fine adjust the speed. The small knob turns but nothing happens. Any help please. Gary
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6th Dec 2017, 8:44 pm | #2 |
Dekatron
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Re: Garrard 4HF Pitch control
I think they were quite stiff so maybe the knob is loose.
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6th Dec 2017, 11:20 pm | #3 |
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Re: Garrard 4HF Pitch control
All seems tight.. The knob turns and theirs weird kind of spring noise at the extreme limit of the turn in both directions??
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7th Dec 2017, 10:18 am | #4 |
Dekatron
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Re: Garrard 4HF Pitch control
It's a wirewound control so it would seem the wire has probably broken. Need to take it apart to find out. Probably a standard value pot can be fitted in it's place.
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7th Dec 2017, 11:54 am | #5 |
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Re: Garrard 4HF Pitch control
"The Classic Turntable Company" may have spares.
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Edward. |
7th Dec 2017, 11:40 pm | #6 |
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Re: Garrard 4HF Pitch control
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7th Dec 2017, 11:56 pm | #7 |
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Re: Garrard 4HF Pitch control
I dont think a standard pot will work, if I remember, the pot is around 20W, maybe more.
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8th Dec 2017, 2:01 am | #8 |
Heptode
Join Date: Dec 2010
Location: Barnstaple, N.Devon, UK.
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Re: Garrard 4HF Pitch control
Hello. This was discussed on Vinyl Engine and a wiring diagram posted that might be of help. The high voltage diagram is the one for UK mains.
As Michael says, it will need to be a high wattage control but not sure of the actual rating. Hope this is of some help. Edit: further reading shows a 25 watt OHMITE RHS10KE being a good fit if you can find one. David. Last edited by teetoon; 8th Dec 2017 at 2:23 am. |
8th Dec 2017, 2:37 am | #9 |
Heptode
Join Date: Dec 2010
Location: Barnstaple, N.Devon, UK.
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Re: Garrard 4HF Pitch control
The pots are available on ebay but not cheap. About £30 inc post.
See images. David. |
8th Dec 2017, 6:05 am | #10 |
Dekatron
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Location: Biggin Hill, London, UK.
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Re: Garrard 4HF Pitch control
As a sort-of aside, I was amazed to find (while looking for something else) that RS sell 'rheostats', including the one in this thread :
https://uk.rs-online.com/web/p/rheostats/8915379/ Some of the higher power ones are _very_ expensive, and I wonder what they are used for these days. |
8th Dec 2017, 8:24 am | #11 |
Hexode
Join Date: Mar 2012
Location: Sonoma County, California, USA.
Posts: 405
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Re: Garrard 4HF Pitch control
The control for a Garrard RC98 would probably work. But this isn't much help because if anything, the RC98 is uncommon; fewer were made than the 4HF.
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9th Dec 2017, 12:25 am | #12 |
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Re: Garrard 4HF Pitch control
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21st Dec 2017, 2:09 am | #13 |
Heptode
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Location: Barnstaple, N.Devon, UK.
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Re: Garrard 4HF Pitch control
Hi Skaman. Any news on this? I am interested to hear if you got it sorted as I have a couple 4HF's and the pitch control is a weak spot on these. The actual fitted controls are the sort you would find on the back of TV's.
I had my first 4HF back around 1972 and the control smoked and got replaced by a couple of wirewound resistors (by my Dad). We later discovered that the motor had shorting turns. On my later 4HF's there is a slight burning smell if you adjust the control but it clears and the motors only get warm so I assume Garrard only meant the controls to be adjusted sparingly. David. |