[TechAssist] Re: Zenith model A25A12D CHASSIS GA-2 Warrior line
- From: Alvin Rose <ajroseca@xxxxxxxxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Sun, 08 Aug 2004 16:01:17 -0700
Hi Bob
I replaced the 100 mfd cx3416 in the power supply
and the set is working fine now I checked the Capacitor for
capacity ..leakage and esr..all checked ok but set would not
work with it I replaced it with a 50 volt rating as original was 25 volts
Thanks for your advice ..it is appreciated
Also thanks to Jeff Stieleau Shoreline Electronics for his suggestions
Which checked ok.
Alvin Rose
Radio & Tv Centre.
Bob@Bobs tv wrote:
>Alvin,
> I would replace the 100uf {CX3416} in the power supply {common
>failure} When you turn set on, does the HV start to go up? In standby you
>should have 130V collector HOT to ground...I believe the vertical circuit
>must have deflection or set will shut down...Unsoldering/removing vertical
>output will cause shutdown. Notes on GA are as follows.. Shutdown.. vertical
>diode, resistor and or vert output IC. Bad flyback...ring/scope HOT...
>Bob,
>
>Bobs TV Worcester, ma
>
>woodman1@xxxxxxxx
>
>Main 508-853-1482
>Fax 508-853-1480
>----- Original Message -----
>From: "Alvin Rose" <ajroseca@xxxxxxxxxxxxxxx>
>To: <techassist@xxxxxxxxxxxxx>
>Sent: Sunday, August 08, 2004 1:34 AM
>Subject: [TechAssist] Zenith model A25A12D CHASSIS GA-2 Warrior line
>
>
>
>
>>We have a zenith Model a25a12d chassis GA-2 which is shuting down
>>changed cx3431 22 mfd 63 volt electrolytic and cx3268 22mfd@160v
>>no change..Unsoldered vertical IC but still shuts down..Unit will only run
>>for several seconds..any help on this one would be appreciated
>>Alvin Rose
>>Radio & tv Centre
>>Marystown, Nl
>>
>>
>>
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