[TechAssist] Re: Mitsubishi VS4562 PTV No tuner input "A" or "B" ( Externals are good )
- From: "LeRoy Westlund" <llw@xxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Tue, 11 Feb 2003 13:18:27 -0700
Thanks,...but,...3 replies telling me I have NO tuner voltage, but, nobody
can tell me where the source is. Actually,...there is NO ckt. trace even
tied to the BT pin on the tuner.
Regards,
LLW
LeRoy Westlund
Westlund TV & Electronics " Walk tall,...Walk straight
93 North Main and look the world
Centerfield, UT 84622-0087 right in the eye "
Ph./Fax 435-528-3822
mailto:LLW@xxxxxxxxxx
-----Original Message-----
From: al m <ampm@xxxxxxx>
To: techassist@xxxxxxxxxxxxx <techassist@xxxxxxxxxxxxx>
Date: Tuesday, February 11, 2003 7:24 AM
Subject: [TechAssist] Re: Mitsubishi VS4562 PTV No tuner input "A" or "B"
Externals are good )
>
>I think your BT should be the 33V supply. I don't see any 33V on the tuner.
>al marquardt
>ampm@xxxxxxx
>
>
>----- Original Message -----
>From: "LeRoy Westlund" <llw@xxxxxxxxxx>
>To: "TechAssist" <techassist@xxxxxxxxxxxxx>
>Sent: Monday, February 10, 2003 9:35 PM
>Subject: [TechAssist] Mitsubishi VS4562 PTV No tuner input "A" or "B" (
>Externals are good )
>
>
>>
>> Hi Members,
>> I have fixed 2 of 3 problems with this Mits PTV, Thanks to Jeff's
>(Intrepid)
>> tech CD.
>> Problem # 1: No video, sound OK.
>> Fix: Performed pip bypass.
>>
>> Problem # 2: Trapezoid picture.
>> Fix: Replaced C5A1, and C5A2 (Both 2.2 @50) electrolytic caps. (On side
>pin
>> board).
>>
>> Now for problem # 3: No video, or sound from tuner on both "A", and "B"
>> inputs.
>> All external inputs work OK.
>> I removed the tuner, and soldered all connections on the tuner PC board,
>> re-installed, but NO help. Before I send this tuner to Tip Top,...I am
>> listing the voltage readings on the pins of the tuner. I am hoping
someone
>> can tell me if they are correct, or is anything missing ?
>>
>> Tuner voltages"
>> BJ = +.13
>> BT = 0
>> BH = +.01
>> AGC = +6.64
>> BL = +10.66
>> BM = +10.77
>> IF = 0
>>
>> Any help is appreciated,
>> LLW
>>
>> LeRoy Westlund
>> Westlund TV & Electronics " Walk tall,...Walk straight
>> 93 North Main and look the world
>> Centerfield, UT 84622-0087 right in the eye "
>> Ph./Fax 435-528-3822
>> mailto:LLW@xxxxxxxxxx
>>
>>
>>
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