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

Philips210 · 19th Oct 2017, 8:57 pm

Hi.

I would also agree with Nick in that it's likely a supply line is missing. The fact that none of the LEDs are lighting seems to reinforce this point.

I remember having a similar no chroma problem many years ago in a Sharp VC7750 early VHS set. The loss of supply turned out to be due to a s/c electrolytic. This is something worth bearing in mind where long dormant equipment is brought back into service. Some electrolytics take objection to the sudden stress if not gently reformed.
For long dormant VCRs, and after a visual inspection, I usually connect the VCR to mains for a few seconds then disconnect. I repeat this several times in the hope it will help to reform most of the electrolytic capacitors. I've so far not had any problems with this approach.

Regards
Symon.

19th Oct 2017, 8:57 pm	#9
Philips210 Nonode Join Date: May 2007 Location: Redruth, Cornwall, UK. Posts: 2,573	Re: Sanyo VTC 9455 Betamax - No colour Hi. I would also agree with Nick in that it's likely a supply line is missing. The fact that none of the LEDs are lighting seems to reinforce this point. I remember having a similar no chroma problem many years ago in a Sharp VC7750 early VHS set. The loss of supply turned out to be due to a s/c electrolytic. This is something worth bearing in mind where long dormant equipment is brought back into service. Some electrolytics take objection to the sudden stress if not gently reformed. For long dormant VCRs, and after a visual inspection, I usually connect the VCR to mains for a few seconds then disconnect. I repeat this several times in the hope it will help to reform most of the electrolytic capacitors. I've so far not had any problems with this approach. Regards Symon. Last edited by Philips210; 19th Oct 2017 at 9:04 pm. Reason: text edit