[TechAssist] Re: samsung k50mvro3 chassis shorting output transistor

  • From: Alvin Rose <ajroseca@xxxxxxxxxxxxxxx>
  • To: techassist@xxxxxxxxxxxxx
  • Date: Tue, 17 Feb 2004 21:24:07 -0800

Hi Don
output transistor was a d1878...ecg2331 will check the regulated voltage
and the caps you indicated.
Thanks for the info..I think this set is a canadian unit
Don Hartigan wrote:

>Alvin;Couple of questions.
>What is your reg. B+.It should be 125vdc.Did you replace HOT with a 2SD1650
>& did you check caps C407,C408 & C415 off the collector of HOT.Also make
>sure R809=680 ohm & R812=15 Kohm,have not changed
>value...........................
>Don of HARTS-TVCR''ASC''
>9 Robert St,Oromocto,NB,Can,E2V3N2
>hartstv@xxxxxxxxxxx
>Tel-5063579785,fax-3576010
>cel-4701719
>----- Original Message ----- 
>From: "Alvin Rose" <ajroseca@xxxxxxxxxxxxxxx>
>To: <techassist@xxxxxxxxxxxxx>
>Sent: Tuesday, February 17, 2004 8:54 PM
>Subject: [TechAssist] Re: samsung k50mvro3 chassis shorting output
>transistor
>
>
>  
>
>>Hi Bob
>>the model number is MVR2100C
>>Alvin
>>Gemini Computer & TV wrote:
>>
>>    
>>
>>>What is the model number (not the chassis number)?
>>>
>>>Bob Waterman, CET® #RI-28
>>>Master Technician License #9109
>>>Service Manager / Parts Manager
>>>Gemini Computer, TV, & Security Alarms
>>>(508)695-7302
>>>(508)695-7769 FAX
>>>geminitv@xxxxxxxxxxxxxxxx
>>>geminitv@xxxxxxx
>>>www.geminicomputertvsecurityalarms.com
>>>
>>>
>>>----- Original Message ----- 
>>>From: "Alvin Rose" <ajroseca@xxxxxxxxxxxxxxx>
>>>To: <techassist@xxxxxxxxxxxxx>
>>>Sent: Tuesday, February 17, 2004 5:54 PM
>>>Subject: [TechAssist] samsung k50mvro3 chassis shorting output transistor
>>>
>>>
>>>
>>>
>>>      
>>>
>>>>Hi Guys
>>>>We have a Samsung K50mvr03 which is a 14 inch tv-vcr combo
>>>>Unit  had a shorted output transistor..Replaced it and the
>>>>1 ohm fused resistor  also the flyback transformer..Set ran
>>>>for a short time and then shorted transistor again..Checked the
>>>>yoke for arcing  nothing noted  do not have a pdf of this unit
>>>>any suggestions or help would be appreciated.
>>>>Alvin Rose
>>>>Radio & Tv Centre
>>>>Marystown, Nfld
>>>>
>>>>
>>>>
>>>>        
>>>>
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