[TechAssist] Re: Orion combi's repeat failure horiz driver transformer
- From: "J Silverman" <greentron@xxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Thu, 11 Dec 2003 13:28:17 -0500
Usually the problem is a turn-to-turn short in the primary. Could be a
defect in the wire insulation or maybe the insulation was damaged by the
wire handling by a subcontractor winding by hand in a cottage industry.
Orion says should measure 10 ohms but the resistance change could be small
or large depending on what shorts to what. Could be that only a small
percentage of the transformers will fail and your customer just had the bad
luck to get a couple of them. In any case, you have no way of knowing what
will happen in the future. If the customer is unhappy, have him talk to
Orion Customer Relations. Maybe they will kick in something to pay for the
repair.
Jerry Silverman
Greentron Inc
4 Newland Ave
Greenville SC 29609
864 232 3889
Fax 271 2080
mailto:greentron@xxxxxxx
----- Original Message -----
From: "John at Main TV" <maintv@xxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Wednesday, December 10, 2003 8:06 PM
Subject: [TechAssist] Orion combi's repeat failure horiz driver transformer
> I rpaired this Sansui COM7200 about 6 months ago, I replaced the horiz
> diver transformer wiht the original from Orion. Now it has the same
> problem. By checking the inductance of the primary and secondary it
> appears the core is breaking, the inductance of both windings is reduced
> to about half but the DC reistance and the ringing test do not change.
> Has anyone seen this before? I am sure the customer will ask me if this
> will happen again in 6 months. John.
> --
> John Mielke
> Main TV
> Longmont,Co 80501
> 303 776 6955
> 303 776 0792 fax
> maintv@xxxxxxxxxxx
>
>
>
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