[TechAssist] Re: Philips Stereo model FW-C380/37 Amp section dead - [problem found]
- From: "Gemini Computer & TV" <geminitv@xxxxxxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Tue, 5 Nov 2002 15:50:55 -0500
Force 32 shows the following info:
Ref# 7302 - AN7591 - part# 932216189682
Ref# 1300 - 3.15amp fuse, 250V - part# 482225211225.
Bob Waterman, CET® #RI-28
Master Technician License #9109
Service Manager
Gemini Computer, TV, & Security Alarms
(508)695-7302
(508)695-7769 FAX
geminitv@xxxxxxxxxxxxxxxx
geminitv@xxxxxxx
----- Original Message -----
From: "LeRoy Westlund" <llw@xxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Tuesday, November 05, 2002 3:48 PM
Subject: [TechAssist] Re: Philips Stereo model FW-C380/37 Amp section dead -
[problem found]
>
> Thanks Jim,
> I found it hidden under the back cover.(After complete disassembly).
> Fuse #1300 was open,...and IC # 7302 was dead short on pin # 12.
> The IC is an AN7591. The fuse device has a number (F3,15A250) written on
it.
> Not sure of the value,...but, I think it is 315 ma, cause I found a
similar
> fix for a different model, on the "Intrepid Repair CD", that had these
> numbers listed.
> I think the Philips part number for the fuse is 482225251151,...but I need
> to confirm this. Also, I need the Philips part number for the IC # 7302.
> I'll check the Tritronics web site to see if they have the part numbers
> listed.
>
> Thanks again, Jim.
> This is a good example of how the TechAssist system can work for ALL of
us.
> Also,....thanks for sending the requested Pdf file.
>
> Have a nice day !
> 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: Jim Myers <jr.myers@xxxxxxxxxxx>
> To: techassist@xxxxxxxxxxxxx <techassist@xxxxxxxxxxxxx>
> Date: Tuesday, November 05, 2002 12:26 PM
> Subject: [TechAssist] Re: Philips Stereo model FW-C380/37 Amp section dead
>
>
> >
> >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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