[TechAssist] Re: JVC av-27920 amazing exloding V out!
- From: BOSS1996@xxxxxxx
- To: techassist@xxxxxxxxxxxxx
- Date: Fri, 7 Jan 2005 14:43:15 EST
Don't remember the ref. no. but how about the 100uf/50v cap in the "pump up"
circuit? That usually causes the IC to fail.
Robert Cardoza
Picture Perfect Elec.
9940 NW 6th Ct
Pembroke Pines, Fla, 33024
954-435-5868
In a message dated 1/7/2005 2:34:09 PM Eastern Standard Time,
greentron@xxxxxxx writes:
You could try it again with a dummy yoke, or ring the vertical yoke if you
have the equipment.
Jerry Silverman
Greentron Inc
4 Newland Ave
Greenville SC 29609
Fax/Phone 864 232 3889
mail to: greentron@xxxxxxx
----- Original Message -----
From: "becyn" <becyn@xxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Thursday, January 06, 2005 7:21 PM
Subject: [TechAssist] JVC av-27920 amazing exloding V out!
> Hello all,
>
> This JVC seemed to have a garden variety V-out failure (la7832).
> The original had a little piece blown off, but the 27v limit resistor and
> rectifierdiode were OK. Th zener on the output is good too!
>
> After replacing it with a la7833 (same but higher current-i think), it too
> exploded almost immediatly upon power up.
>
> I did a resistance check between H and V yokes and measured open-OK.
> Anyone ever encounter something like this?
>
> Jim McVey
> McVey Alltronix
> 327 Broadway
> Newburgh N.Y. 12550
>
> *NOT* a NESDA member
> Factory authorized
> service for over 20
> major brands.
> 845 561 8383
>
>
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>Don't remember the ref. no. but how about the 100uf/50v cap in the "pump
up" circuit? That usually causes the IC to fail.
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