[TechAssist] Re: EMERSOM MS1980 NO sound, HV OK
- From: "Don Hartigan" <hartstv@xxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Fri, 3 May 2002 07:28:50 -0300
Fernand,IC402 gets it's 12vdc i/p from pin 10 of flyback thru R439=2.2ohm
&D402,filtered by C437=1000ufd/25vdc.The 9volt o/p of IC402 feeds various
pins on IC201=TA8654AN.......HTH...Don......
HARTS-TVCR''ASC''
9-Robert St.,Oromocto,NewBrunswick,CAN
Tel#506-357-9785Fax#506-357-6010
----- Original Message -----
From: "Fernand Goguen" <fgoguen@xxxxxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Thursday, May 02, 2002 3:45 PM
Subject: [TechAssist] EMERSOM MS1980 NO sound, HV OK
> Went on a service call for a complaint of tv clicking off when either vol.
up or dn was depressed either on the remote or front panel of tv. Opening up
the set I found C507 100uf 160 volts had leaked and had eaten traces on
circuit board. Replaced with 250 volts I had on hand. Set played for 2 hours
and went out again. This time it would not come onwhen I used remote or
front panel switches. I resoldered around scr and other parts in horiz
section. I now have H.V. but no picture, no sound. Heater does not light. I
have a regulator IC402 7809 and I do not have any voltage at input or
output. I would appreciate a scan of this set or if someone could tell me
where the b+ for the above IC comes off the scan derived voltages.
> FERNAND GOGUEN
> GOGUEN TV SERVICE
> fgoguen@xxxxxxxxxxxxxxx
>
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