UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - Sanyo VTC 9455 Betamax

HurtyAC · 22nd Oct 2017, 11:32 am

Do you have a scope? Beware of jumping in just changing caps as you may break more that you fix. The only cps to be wary of are the low voltage ones on the primary side of switch mode power supplies! If you have a scope, turn the machine on then scope each rail to see the d.c. value is correct and see if there is any noise or hum on the rails, if they are clean, leave alone and look elsewhere! DO NOT ADJUST ANY POTS!! as said before. Man made faults are the worst and time consuming.

22nd Oct 2017, 11:32 am	#19
HurtyAC Tetrode Join Date: May 2009 Location: Ware, Hertfordshire, UK. Posts: 75	Re: Sanyo VTC 9455 Betamax - No colour Do you have a scope? Beware of jumping in just changing caps as you may break more that you fix. The only cps to be wary of are the low voltage ones on the primary side of switch mode power supplies! If you have a scope, turn the machine on then scope each rail to see the d.c. value is correct and see if there is any noise or hum on the rails, if they are clean, leave alone and look elsewhere! DO NOT ADJUST ANY POTS!! as said before. Man made faults are the worst and time consuming.