[TechAssist] Re: DBTV2500 Repeat failure IC501
- From: "John at Main TV" <maintv2004@xxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Wed, 9 Jun 2004 15:38:22 -0600
That would be the same as a Memorex in the US. You may need to have the
original regulator that has an internal connection to pin 5 (usually pin 5
is open). The output voltage should be 136.6v and the V on pin 2 should be
137.3v. Also check R506 (180-20watt) and R507 (47 ohm-quarter watt) and
C519 (10uf- 160v). How did the regulator fail originally, short or open?
John.
John Mielke
Main TV
636 main St.
Longmont, Co
phone 303 776 6955
fax 303 776 0792
maintv2004@xxxxxxxxxxx
----- Original Message -----
From: "D Trippel" <dtrippel@xxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Wednesday, June 09, 2004 3:41 PM
Subject: [TechAssist] DBTV2500 Repeat failure IC501
> Hello Everyone!
>
> I Have a couple of Durabrand DBTV2500 tv's that have repeat failure of
> ic 501 str30110 reg , R506 20w , R 508 and Q 401 hot. Both of these
> sets ran about a month and are back. Same problem. Has anyone out there
> found the cause . I have checked a variety of components in the reg
> circuit , and other than the parts listed everything checks out fine.
> Any help would be appreciated.
> Don trippel
> Don's Electronics
> Rosthern,Sask
> Canada
>
>
>
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