Help with cpc 464 - UK Vintage Radio Repair and Restoration Discussion Forum

Laurdys · 7th Jun 2010, 8:31 pm

i have a cpc 464 which works apart from the tape drive. the tape drive can fast forward, rewind, stop, eject but not play. i've taken a look inside and tried operating it but the motor dosn't even start for playing a tape but is fine for rewinding and fast forwarding so the problem is electrical can anyone help?

G8VAT Wolfman · 8th Jun 2010, 7:17 am

Long time since I worked on these but if memory serves me.. there is a small open pair of switch contacts under the deck that provide power to the motor when the buttons are pressed, they are probably not being closed enough during the play selection, or may be dirty at one spot.

I don't think there is anything else in the motor circuit.

Laurdys · 9th Jun 2010, 5:32 pm

OK, i have just cleaned the leaf switches that hasn't helped but i did notice that on pressing play one switch opens and the other closes when i shorted the open one the motor started. i've spotted a relay in there which is in parrallel with the switch that opens when play is pressed. i dont have to type a command in to get the tape to play do i?

julie_m · 9th Jun 2010, 6:05 pm

Try

Code:

LOAD ""

This might allow you to start the cassette motor on PLAY.

G8VAT Wolfman · 9th Jun 2010, 7:29 pm

Laurdys · 11th Jun 2010, 8:05 pm

you do have to type load "", when i saw the relay in there it dawned on me

7th Jun 2010, 8:31 pm	#1
Laurdys Pentode Join Date: May 2009 Location: Stockton-on-Tees, County Durham, UK. Posts: 154	Help with cpc 464 i have a cpc 464 which works apart from the tape drive. the tape drive can fast forward, rewind, stop, eject but not play. i've taken a look inside and tried operating it but the motor dosn't even start for playing a tape but is fine for rewinding and fast forwarding so the problem is electrical can anyone help? __________________ If it can be built, it can also be fixed.

8th Jun 2010, 7:17 am	#2
G8VAT Wolfman Retired Dormant Member Join Date: Jan 2010 Location: Yorkshire, UK. Posts: 293	Re: Help with cpc 464 Long time since I worked on these but if memory serves me.. there is a small open pair of switch contacts under the deck that provide power to the motor when the buttons are pressed, they are probably not being closed enough during the play selection, or may be dirty at one spot. I don't think there is anything else in the motor circuit.

9th Jun 2010, 5:32 pm	#3
Laurdys Pentode Join Date: May 2009 Location: Stockton-on-Tees, County Durham, UK. Posts: 154	Re: Help with cpc 464 OK, i have just cleaned the leaf switches that hasn't helped but i did notice that on pressing play one switch opens and the other closes when i shorted the open one the motor started. i've spotted a relay in there which is in parrallel with the switch that opens when play is pressed. i dont have to type a command in to get the tape to play do i? __________________ If it can be built, it can also be fixed.

9th Jun 2010, 6:05 pm	#4
julie_m Dekatron Join Date: May 2008 Location: Derby, UK. Posts: 7,735	Re: Help with cpc 464 Try Code: LOAD "" This might allow you to start the cassette motor on PLAY. __________________ If I have seen further than others, it is because I was standing on a pile of failed experiments.

9th Jun 2010, 7:29 pm	#5
G8VAT Wolfman Retired Dormant Member Join Date: Jan 2010 Location: Yorkshire, UK. Posts: 293	Re: Help with cpc 464

11th Jun 2010, 8:05 pm	#6
Laurdys Pentode Join Date: May 2009 Location: Stockton-on-Tees, County Durham, UK. Posts: 154	Re: Help with cpc 464 you do have to type load "", when i saw the relay in there it dawned on me __________________ If it can be built, it can also be fixed.