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Cassettes playing way to fast


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#1 6.1SRT

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Posted 29 April 2016 - 08:24 AM

My 975 cassette players play fast on the high setting and even faster on the normal speed! Would really like to correct this. Any ideas on how to fix it? I tried cleaning it while I was cleaning the tuner and volume controls. Both of those work excellent now, but cassettes still playing fast.

#2 baddboybill

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Posted 29 April 2016 - 08:50 AM

There is an adjustable pot on the speed board that might need cleaning and readjustment 😉


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#3 6.1SRT

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Posted 29 April 2016 - 09:21 AM

Awesome! I will try that. Appreciate it

#4 6.1SRT

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Posted 29 April 2016 - 09:21 AM

Awesome! I will try that. Appreciate it

#5 Lasonic TRC-920

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Posted 29 April 2016 - 10:19 AM

My 975 cassette players play fast on the high setting and even faster on the normal speed! Would really like to correct this. Any ideas on how to fix it? I tried cleaning it while I was cleaning the tuner and volume controls. Both of those work excellent now, but cassettes still playing fast.

 

Also, there is a button marked SPEED next to the Mic and Phone jacks. It is used for high speed tape to tape recording / dubbing. It needs to be set to NORMAL.



#6 6.1SRT

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Posted 29 April 2016 - 10:22 AM

I've tried both positions and both play fast and in normal it's even faster than the high position

#7 Lasonic TRC-920

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Posted 29 April 2016 - 10:44 AM

I've tried both positions and both play fast and in normal it's even faster than the high position

 

OK, I would say it's not an adjustment, but a problem in the circuit of that high speed dubbing system. I wonder if you can bypass it all together



#8 6.1SRT

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Posted 29 April 2016 - 11:10 AM

Was wondering the same thing but without s schematic to follow, I'm kinda lost

#9 baddboybill

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Posted 01 May 2016 - 12:32 PM

It's probably the pot that's bad but I would try and clean it first then adjust while testing👍


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#10 6.1SRT

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Posted 02 May 2016 - 06:35 PM

Thanks for all the info. Have to take it apart again and dig in...



#11 6.1SRT

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Posted 04 May 2016 - 11:42 AM

I don't see any pot after the norm/high switch. The switch is just a push button. I have cleaned it already. Not super knowledgeable on these, but am I to assume the more voltage the cassette mechanism gets, the faster it plays? And vice versa? Could I wire in a pot right before the cassette to lower the voltage and slow down the motor to play normal?

#12 baddboybill

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Posted 04 May 2016 - 04:54 PM

There is pot I just can't remember exactly where it is 🤔. Post some clear pics of the boards so I don't have to open mine


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#13 Rainesupreme

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Posted 27 May 2017 - 08:30 AM

Hi guys, did anyone ever find a fix for this issue?



#14 ralrein1

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Posted 27 May 2017 - 02:28 PM

Dunno,if they did they sure are being quiet about it.

#15 baddboybill

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Posted 28 May 2017 - 09:08 PM

I know for a fact there is an adjustable resistor pot on the speed control board that usually needs cleaning as mine did

#16 moshenskmz

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Posted 13 July 2017 - 03:40 PM

Im having the same issue with my TRC-935.. going to take it into shop today and will let you guys know if that resistor pot clean works for me.. .thanks