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

From: John Mielke <maintv2002@xxxxxxxxxxxxx>
To: techassist@xxxxxxxxxxxxx
Date: Tue, 15 Oct 2002 17:40:32 -0600

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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Follow-Ups:
- [TechAssist] Re: SYMPHONIC TV/VCR, M:TVCR9F1, power supply problem
  - From: matt sherer

References:
- [TechAssist] Re: SYMPHONIC TV/VCR, M:TVCR9F1, power supply problem
  - From: gulftech

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

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