[TA-A] Re: Pan AG-1960 and Mitsu VS-5061

Do you know were to jump the Y and Chroma lines?


----- Original Message ----- 
From: "Dr. Mark" <meinn99@xxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Tuesday, February 05, 2008 1:07 AM
Subject: [TA-A] Pan AG-1960 and Mitsu VS-5061


>
>  The Pan and the Mitsu belong to two different customers. Both units are 
> not worth much these days, but some folks like their old gear.
>
>  Thanks for the tips.
>
>  Mark
>
>  MC Mobile
>
>
> Telerama <TeleramaTV@xxxxxxxxxxx> wrote:
>  Holy crap, buy a new VCR!
>
> Switch mode regulator shorted, and caps bad in supply, check Zeners in
> supply as well.
>
> Mitsu projo: Caps bad on PIP module, remove module jump Y and Chroma 
> lines.
> Sweat pins on Vert output IC.
>
> I am new here,
>
> Isn't this forum limited to technicians?
>
> Is it a gp forum?
>
>
> ----- Original Message ----- 
> From: "Dr. Mark"
> To:
> Sent: Tuesday, February 05, 2008 12:49 AM
> Subject: [TA-A] Re: RCA will not power up
>
>
>> Dear Techassist crew,
>>
>> 1. We were looking for a schematic and possibly a block diagram for the
>> power supply in a Panasonic AG-1960 VCR. The power supply is popping the
>> 2A, 250 V fuse closest to the AC in, and this will occur when the power
>> supply is unplugged from the rest of the unit. There is another fuse in
>> the power supply that remains intact. Does anyone have information on 
>> this
>> power supply?
>>
>> 2. Also, we were looking for schematics and block diagrams for a
>> Misubishi VS-5061 projection TV. The unit has a vertical stability 
>> problem
>> until it is warmed up for 30 minutes, then OK. We wanted to investigate a
>> few caps around IC201, IC202, and IC203. Does anyone have schematics and
>> diagrams for this unit?
>>
>> Any tips are appreciated.
>>
>> Thanks,
>>
>> Mark
>>
>> MC Mobile
>> Telerama wrote:
>> Terry,
>> First, this chassis has no relay "click" when plugged in. The 195 will
>> chirp
>> when first plugged in. If you hear that chirp, the supply is running.
>>
>> There are so many things that can kill a set. It is true that this 
>> chassis
>> has had bad flybacks. There are two flybacks for the 195. The 239111
>> version
>> is the one that failed. We do work for three shops, I have NEVER changed
>> the
>> other type (250694), always the 239111 one would fail.
>>
>> If there is no short on the B+ line, and there is nothing wrong with
>> IC2bus,
>> and all standbys are ready, the set will fire, or attempt to fire even
>> with
>> a bad flyback. The set will shut down with a bad primary or secondary
>> winding in the flyback.
>>
>> About 30% of the 239111's I have changed had no primary or secondary
>> short.
>> There was a breach in the housing of the transformer. In other words it
>> would arc, and in most cases short the HOT.
>>
>> If you are not skilled, it can be very difficult locating a corrupted 
>> data
>> or clock line on the bus. I have had on several occasions with the 195 
>> and
>> 197, surface mount caps that were loading the clock lines.
>>
>> You need a schematic, DMM, O-scope (in some instances) and of course, 
>> some
>> level of skill and knowledge.
>>
>> Tony,
>> Telerama Television
>>
>>
>> ----- Original Message ----- 
>> From: "Conley, Terry W (Hazard)"
>> To:
>> Sent: Monday, February 04, 2008 2:39 PM
>> Subject: [TA-A] RCA will not power up
>>
>>
>>>I would really appreciate some advice on an RCA Model P52960 rear
>>> projection TV. It has chassis PTK195Y06B. This television was donated
>>> to my church youth group and it will not power up and I hear no relay
>>> clicking if I connect it to A/C power and try to turn it on (also, the
>>> buss-type inline fuse is still intact). I assume it is in the primary
>>> power supply and would like to have some advice on the most commonly
>>> failing parts in that area. I have done some research and feel pretty
>>> sure that I will need to change the flyback transformer, but would like
>>> to know other common weak points.
>>>
>>>
>>> Thanks,
>>>
>>> Terry Conley
>>>
>>> Terry.conley@xxxxxxxxx
>>>
>>>
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