[TechAssist] Re: GE CTC-203AA9 MODEL 27GT630
- From: Alvin Rose <ajroseca@xxxxxxxxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Sun, 13 Mar 2005 22:10:59 -0330
Hi Al
The degaussing coil is plugged in to the terminals near the
power input..It is not connected in any way to the q4101
switcher but it instantly shorts the transistor and blows the fuse
The coil is connected in the relay and fuse circuit..I can't see any
reason for
the shorted Mosfet..When the fuse blows the mosfet is shorted
at both junctions..Disconnect the coil and it will work fine.
With a shorted coil it should only blow the fuse.
Alvin
Al Gutz wrote:
>ALVIN
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>Looking at the circuit, the 5 amp fuse is in line with the degaussing
>coil but Q4101 is well isolated from anything near coil. Is it possible
>that deg coil is plugged into wrong plug. Some boards this is an easy
>mistake.
>I find the IRFI840 is a reliable replacement.
>
>Al G
>Al's TV-Electronics
>Pembroke Ont.
>Canada
>
>Alvin Rose wrote:
>
>
>>Hi Guys
>>We have a GE model 27GT630 ....CTC-203AA9 chassis
>>which has damaged the voltage switch Q4101..I have replace
>>the switch with a IRF840 but when the degaussing coil is connected
>>to the chassis it blew the transistor and fuse again..Both cases happened
>>when the degaussing coil was plugged in to the board..With coil
>>disconnected set works
>>ok...any suggestions would be appreciated
>>Alvin Rose
>>Radio & Tv Centre
>>Marystown, Nl
>>
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