[TechAssist] Re: RCA F20163WN CTC146L..Dead.clicks
- From: Al Gutz <alg@xxxxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Sat, 04 Oct 2003 22:26:02 -0400
Jeff
140V on Q4102 E is correct. This is a basic linear PS. 12v stby on
Q3107 E, 5v stby on Q3108 E. cr 4122 +45v supply, cr4121 25v supply,
cd4120 18v supply, 12v run Q4106 E, 9v run Q4107 E, 5v run cr3601. relay
started on 12v stby and locked on from 18v run. Horz drive from ic1001
pin 64, X-ray prot on ic1001 pin 1 should read 1.87v. X-ray test jumpers
xrp4001 & 2, at rear of board.
Can't scan this right now because I am in process of changing computers
and do not have scanner installed and cannot put a feild service guide
in the fax machine.
If you need more details let me know.
Al G
Al's TV-Electronics
Pembroke Ont.
Canada
Intrepid Video Support wrote:
>
> When I press power on cold start, sounds like the HV builds, then shuts down.
> Hit power again, no click,
> but press again and it clicks on, then off again.
> Customer said unit was dropped and acted up after that but I can find no
> cracks in the PCB even with
> shining a bright light on the PCB.
> I replace CR4118 with GP15D diode as that is the closest I had and
> checked/soldered R4114/4116.
> Q4102 measures 140vdc on base and emitter as soon as I press power and HOT
> checks OK.
> Does anyone have a print of the power supply to fax/email me?
> Thank you.
>
> Jeff Dougherty
> Intrepid Video TV/VCR
> 263 S Front St
> Steelton PA 17113
> fax...717-564-4952
> www.intrepid-video.com www.tech-repair.net
>
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