[TechAssist] Re: Philips Stereo model FW-C380/37 Amp section dead
- From: "Jim Myers" <jr.myers@xxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Tue, 5 Nov 2002 14:26:14 -0500
VCC to IC's 7301 and 7302 is pin 12 and should be about 19 volts, each IC
has a fuse device which may not look anything like a normal fuse, ref # 1300
to pin 12 of 7302 and 1301 to pin 12 of 7301. They are labeled T3A15 on the
schematic.
Jim Myers
Since 1972
Telrad Electronic Services Co.
Fort Wayne, IN 46815
jr.myers@xxxxxxxxxxx
260-432-4486 Fax and Voice
Fax is always on
----- Original Message -----
From: "LeRoy Westlund" <llw@xxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Tuesday, November 05, 2002 12:23 PM
Subject: [TechAssist] Re: Philips Stereo model FW-C380/37 Amp section dead
Wolfe,
Don't mistake me for one of the "dummies" on this list.
I have over 30 years experience in this kind of work.
I already tested the ones I could visually locate, without complete
disassembly of the unit. Yes,...of course I checked across them with an ohm
meter.
That's why I need help !
I need a service manual, or some guidence in what to check.
Hell, man,.....what do you think this forum is far ?
If you have too much ego to help a guy with a problem,....why don't you
delete the post, and move on ?
We can do without some of you so called educated idiots on this list.
Stay with your computer expertisum,...and leave the TV, and stereo problems
to those that have the resources to help.
LLW
LeRoy Westlund
Westlund TV & Electronics " It's such a pretty world
93 North Main today !....
Centerfield, UT 84622-0087 Look at the Sunshine. "
Ph./Fax 435-528-3822 :-)
mailto:LLW@xxxxxxxxxx
-----Original Message-----
From: wolfe-mcse@xxxxxxx <wolfe-mcse@xxxxxxx>
To: techassist@xxxxxxxxxxxxx <techassist@xxxxxxxxxxxxx>
Date: Tuesday, November 05, 2002 4:29 AM
Subject: [TechAssist] Re: Philips Stereo model FW-C380/37 Amp section dead
>
>Howdy...
>
>
>Now you are doing something that my electronics instructor would jump on
ANY
>student about...that 3 word word. ASS-U-ME. Check the fuses for an open,
>as they can develop a microfracture that is not apparent to the human eye.
>I have seen it before.
>
>
>Wolfe
>
>-----Original Message-----
>From: techassist-bounce@xxxxxxxxxxxxx
>[mailto:techassist-bounce@xxxxxxxxxxxxx]On Behalf Of LeRoy Westlund
>Sent: Tuesday, November 05, 2002 12:25 AM
>To: TechAssist
>Subject: [TechAssist] Philips Stereo model FW-C380/37 Amp section dead
>
>
>
>Hi members,
>All functions seem to work OK,..but, unit is dead.
>The Amp output section seems to be missing a voltage.
>Might just be a fuse device,...but, all visable fuses are OK.
>I have the + 41 volts, the + 28 volts, and the + 20 volts from my power
>supply.
>I also have the + 5 volts, and the +12 volt sources, on the Amp board.
>The highest voltage on the Amp output ICs (7301 & 7302) is only about + 5
>volts.
>Seems like there should be some higher voltages on these chips.
>I don't think that the outputs themself are blown. There are seperate
>outputs for the left, and right channels.
>Can someone give me the voltage readings on one of the outputs ? or,...can
>someone provide a Pdf schematic of the output stages ?
>
>Any help is appreciated,
>LLW
>
>LeRoy Westlund
>Westlund TV & Electronics " It's such a pretty world
>93 North Main today !....
>Centerfield, UT 84622-0087 Look at the Sunshine. "
>Ph./Fax 435-528-3822 :-)
>mailto:LLW@xxxxxxxxxx
>
>
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