[TechAssist] Re: [Fwd: [Fwd: Vcr, RCA VR678HF (fcc# G954255195) dead,P.S resistors I.D.]]
- From: Daniel <danielstarca@xxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Sat, 8 Sep 2001 11:55:59 -0700 (PDT)
Dear Philip;
This Unit sounds like the smps may need to be
rebuilt.Suggest you remove the Main Transistor Q801
and test it out of circuit.Also check the Diodes (and
Capacitors) in the Secondary of the transformer
circuit. There are several Power Supply Rebuild kits
now available, might be a good idea in this case.
-Daniel
--- Philip Bader <philbad@xxxxxxxxxx> wrote:
>
>
>
> -------- Original Message --------
> Subject: [Fwd: Vcr, RCA VR678HF (fcc# G954255195)
> dead,P.S resistors
> I.D.]
> Date: Sat, 08 Sep 2001 11:19:52 -0400
> From: Philip Bader <philbad@xxxxxxxxxx>
> Organization: Jan-Phyl TV
> To: Yahoogroup-TV <tv-repair@xxxxxxxxxxxxxxx>
>
> sorry about attachment,I have two PC's networked and
> I did not set
> preferences to plain text.It is now.
>
> -------- Original Message --------
> Subject: Vcr, RCA VR678HF (fcc# G954255195) dead,P.S
> resistors I.D.
> Date: Sat, 08 Sep 2001 10:35:01 -0400
> From: Philip Bader <philbad@xxxxxxxxxx>
> Organization: Jan-Phyl TV
> To: "CONSUMERELREPAIR-L@xxxxxxxxxxxxxxxxxxxx"
> <CONSUMERELREPAIR-L@xxxxxxxxxxxxxxxxxxxx>
>
> This is a beast to access the power supply.All one
> board. Customer said
> it popped and went dead. I find two resistors in the
> p.s. before the
> SMPS transformer,in the primary side: R817( looks
> like .82, 1/2 W) and
> R818 (2200 ohm 1/2W). Both have the side blown off.
> From the top, the
> switching transistor Q801 (BUL26xt) SEEMS OK,at
> least not shorted from
> collector to E or B.There is two other IC's in
> ckt.Any suggestions?
> Help make your TechAssist online repair tips
> database better! Submit your fixes here:
> http://www.circuitwork.com/techassist/tip/#tips
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