[TechAssist] Re: SYMPHONIC TV/VCR, M:TVCR9F1, power supply problem

From: "matt sherer" <m.sheer@xxxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Date: Wed, 16 Oct 2002 07:14:33 -0500
Yep John, I found it.  It looked as if the board location was marked with a
Q603 on top but underneath it was IC651.   I measured the output of this and
was nothing.  Thanks!

Gear Guy
Electronic repair
A/V systems design, maintenance and installation
AMX programming
Matt Sherer, CET
1411 Honeysuckle Lane
Champaign, IL 61821
(217)356-9479
m.sheer@xxxxxxxxxxxxx

----- Original Message -----
From: "John Mielke" <maintv2002@xxxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Tuesday, October 15, 2002 6:40 PM
Subject: [TechAssist] Re: SYMPHONIC TV/VCR, M:TVCR9F1, power supply problem


>
> Yes, you are right, there is an IC651 (6v regulator) on the power supply
> board just above the DC regulator transistor.  It was my mistake, I hope
> I didn't mislead you.   Are you still working on this TV or have you
> found the problem.   John.
>
>
> gulftech@xxxxxxxx wrote:
> > According to my records, there is an IC651 in that set, a 7806
regulator,
> > and I have replaced it to solve that problem.  The TVCR9G1 has problems
> > of no start caused by a little 47ufd, 16 volt cap, C1622.  I mention
this
> > because I once had two sets with the same model number, that were quite
> > different inside.
> >
> > HTH,
> >
> >
> > Ken Smith
> > Gulf Technical Services
> > 3034 Gulf Breeze Parkway
> > Gulf Breeze, FL  32563
> > 850-934-8324 (Voice) 850-932-0819 (Fax)
> >
> >
> > On Mon, 14 Oct 2002 13:24:17 -0600 John Mielke
<maintv2002@xxxxxxxxxxxxx>
> > writes:
> >
> >>Check the connections at the DC jack, if the ground connections are
> >>open
> >>it could cause those symptoms.  Then check the caps on the PS-Defl
> >>board
> >>and check Q631 (2SA1469) for short.  No, there is not a IC651 in
> >>this
> >>set.  They could mean IC601, the power supply driver or IC851, the
> >>audio
> >>output.  Why not connect it to DC, that would eliminate the power
> >>supply.  And of course suspect connections bad on that board.  If
> >>you
> >>need I can send the voltages that should be on the 2 plugs on the
> >>front
> >>of the PS board.   John.
> >>
> >>matt sherer wrote:
> >>
> >>>Symphonic
> >>>TV/VCR
> >>>Model: TVCR9F1
> >>>When you plug the unit in,it comes on automatically.  Loud buzz
> >>
> >>from the
> >>
> >>>speaker, no button functions work.  dark pic but turning up the
> >>
> >>screen on
> >>
> >>>the flyback bring sup a raster.  checked caps in the ps and found
> >>
> >>nothing.
> >>
> >>>This is a 120vac/12vdc model.  I found a tip in database to check
> >>
> >>for IC651
> >>
> >>>and did not find that chip.  PS and deflection share the same
> >>
> >>board.  Anyone
> >>
> >>>know some test points to check the PS voltages?  TIA!!
> >>>
> >>>
> >>>Gear Guy
> >>>Electronic repair
> >>>A/V systems design, maintenance and installation
> >>>AMX programming
> >>>Matt Sherer, CET
> >>>1411 Honeysuckle Lane
> >>>Champaign, IL 61821
> >>>(217)356-9479
> >>>m.sheer@xxxxxxxxxxxxx
> >>>
> >>>
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> >>
> >>
> >>--
> >>John Mielke
> >>Main TV
> >>Longmont,Co
> >>303 776 6955
> >>maintv2002@xxxxxxxxxxxxx
> >>
> >>
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>
> --
> John Mielke
> Main TV
> Longmont,Co
> 303 776 6955
> maintv2002@xxxxxxxxxxxxx
>
>
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References:
- [TechAssist] Re: SYMPHONIC TV/VCR, M:TVCR9F1, power supply problem
  - From: gulftech
- [TechAssist] Re: SYMPHONIC TV/VCR, M:TVCR9F1, power supply problem
  - From: John Mielke
[TechAssist] Re: SYMPHONIC TV/VCR, M:TVCR9F1, power supply problem

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