[TechAssist] Re: Sharp Mini Audio System - CD-DD4500 - Display Not Lighting Up
- From: "David Lessard" <mr_fixit@xxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Thu, 14 Oct 2004 21:09:14 +0100
Address is below (and way down below). Thanks
David Lessard
Alexandria, Ontario. Canada
mr_fixit@xxxxxxxxxxxx
-----Original Message-----
From: techassist-bounce@xxxxxxxxxxxxx
[mailto:techassist-bounce@xxxxxxxxxxxxx] On Behalf Of Jerry
Sent: Thursday, October 14, 2004 4:18 AM
To: techassist@xxxxxxxxxxxxx
Subject: [TechAssist] Re: Sharp Mini Audio System - CD-DD4500 - Display
Not Lighting Up
Hey David,
I have the service manual from sharp if you would like it. Give me your
email address and I will send it to you.
Jerry Eiting geiting@xxxxxxxxxx
Christians Electronic Service
Troy, Ohio
----- Original Message -----
From: "Gary McCartney" <gary@xxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Wednesday, October 13, 2004 10:14 PM
Subject: [TechAssist] Re: Sharp Mini Audio System - CD-DD4500 - Display
Not
Lighting Up
| David, generally speaking and going from memory (which normally isn't
| that great), those displays usually have minus 30V dc, I think from
the
| first or last pin on the display, to ground. Between the first and
last
| pin, usually reads between 3 to 6 V AC.
|
|
|
|
| Gary McCartney
|
| McCartney Electronics
| Guelph Ontario Canada
| Est. 1984
| email: gary (at) number63.ca
|
|
|
|
|
|
|
|
| David Lessard wrote:
| > I wish it was that easy Ed. This unit has a color fluorescent
display.
| > In complete darkness I can see different parts of the display
lighting
| > up (but very dimly). This indicates that the digital part of the
display
| > is sort of working. I'm leaning towards the grid voltage being the
| > problem. This unit has a DIMMER circuit; I believe this controls the
| > grid voltage to the color fluorescent display. I will know more when
I
| > receive the service manual.
| >
| > Let you know what I find when I find it.
| >
| > Thanks.
| >
| > David Lessard
| > Alexandria, Ontario. Canada
| > mr_fixit@xxxxxxxxxxxx
| >
| > -----Original Message-----
| > From: techassist-bounce@xxxxxxxxxxxxx
| > [mailto:techassist-bounce@xxxxxxxxxxxxx] On Behalf Of Tel-Tek
| > Electronics
| > Sent: Wednesday, October 13, 2004 9:26 PM
| > To: techassist@xxxxxxxxxxxxx
| > Subject: [TechAssist] Re: Sharp Mini Audio System - CD-DD4500 -
Display
| > Not Lighting Up
| >
| > Some of those just use a couple of Miniture bulbs for backlite.
| > Check and see if there is a lamp behind the display.
| >
| > -Ed-
| >
| > Tel-Tek Electronics
| > Ontario-Canada
| >
| > teltek3@xxxxxxxxxxxx
| > teltek@xxxxxxxxx
| >
| >
| > -----Original Message-----
| > From: techassist-bounce@xxxxxxxxxxxxx
| > [mailto:techassist-bounce@xxxxxxxxxxxxx] On Behalf Of David Lessard
| > Sent: Wednesday, October 13, 2004 10:47 AM
| > To: techassist@xxxxxxxxxxxxx
| > Subject: [TechAssist] Sharp Mini Audio System - CD-DD4500 - Display
Not
| > Lighting Up
| >
| > Hello Again Gentlemen,
| >
| >
| > I'm sure this is a simple fix but without a service manual I'd be
| > wasting time. Everything works OK except the display doesn't light
up.
| > Might be just a missing filament voltage but I'm not sure where to
check
| > the source from (main transformer?). Any help and/or a service
manual
| > would be greatly appreciated.
| >
| >
| >
| > Thanks in advance.
| >
| >
| >
| > David Lessard
| >
| > Alexandria, Ontario. Canada
| >
| > <mailto:mr_fixit@xxxxxxxxxxxx> mr_fixit@xxxxxxxxxxxx
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