[TechAssist] Re: ORION VCR MODEL VR0101AC DEAD
- From: "Fernand Goguen" <fgoguen@xxxxxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Tue, 21 May 2002 19:14:27 -0300
Thanks for the info. I will check this out tomorrow and I will post the
result. As always, customer does not want to spend a lot of money.
----- Original Message -----
From: "J Silverman" <greentron@xxxxxxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Tuesday, May 21, 2002 6:11 PM
Subject: [TechAssist] Re: ORION VCR MODEL VR0101AC DEAD
>
> The parts we have seen defective in that switch mode power supply are Q503
> (usually shorts and blows fuse), D523 (18 volt zener, Shorts when Q503
> shorts), R514 (0.68 ohm, opens when Q503 shorts), Q511 (TLP621
optocoupler),
> IC501 (AN1431 voltage reference, usually damaged if Q511 fails, D517 (18
> volt zener, overvoltage protector on secondary). Also C515 (0.022 ufd
> ceramic on secondary, damaged when Q511 failed).
> Jerry Silverman
> Greentron Inc
> 4 Newland Ave
> Greenville SC 29609
> 864 232 3889
> Fax 271 2080
> mailto:greentron@xxxxxxx
> ----- Original Message -----
> From: "Fernand Goguen" <fgoguen@xxxxxxxxxxxxxxx>
> To: <techassist@xxxxxxxxxxxxx>
> Sent: Tuesday, May 21, 2002 2:40 PM
> Subject: [TechAssist] ORION VCR MODEL VR0101AC DEAD
>
>
> > I have this VCR that came in dead. Fuse is ok. I measure +56 and -56 at
> the primary but I get nothing at the secondary. I measured the resistance
of
> the transformer T501 and I find resistance on the primary and secondary
> pins. I checked all the diodes and transistors as well as caps and I find
> nothing wrong. Is there some kind of problem I hsve overlooked with that
> transformer? Any help would be appreciated.
> > FERNAND GOGUEN
> > GOGUEN TV SERVICE
> > COCAGNE, N.B., CANADA
> > email:fgoguen@xxxxxxxxxxxxxxx
> >
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