[TechAssist] Re: Sanyo DS19204 no vert
- From: "John Mielke" <maintv2004@xxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Mon, 12 Sep 2005 10:04:43 -0600
At that time we checked with Electronia in Denver first. He said he was
looking for a source for that chip. He may have found one by now and would
be a good place to purchase it. That may also indicate this is a common
failure. We ended up getting it from Tritronics after a couple months.
John.
John Mielke
Main TV
636 Main St
Longmont, Co 80501
303 776 6955
303 776 0792 fax
www.longmontmaintv.com
maintv2004@xxxxxxxxxxx
----- Original Message -----
From: <jhoeme@xxxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Saturday, September 10, 2005 4:41 PM
Subject: [TechAssist] Re: Sanyo DS19204 no vert
> John, where did you purchase the IC101 LA76843N?
> I am unable to find a source.
>
> Jerry Hoeme
> Jerry's TV Service (Estb 1978)
> 840 So. Kansas Ave
> Liberal, KS 67901
>
> ----- Original Message -----
> From: "John Mielke" <maintv2004@xxxxxxxxxxx>
> To: <techassist@xxxxxxxxxxxxx>
> Sent: Friday, September 09, 2005 6:57 PM
> Subject: [TechAssist] Re: Sanyo DS19204 no vert
>
>
> I just had a DS25204-01 (similar or same?) that had no vertical
deflection.
> It turned out to be IC101 LA76843N, a 80 pin surface mount. Apparently
this
> is a common problem, we had to wait about 2 - 3 months for the chip. I
don't
> think it was expensive. Sorry, I do not have a schematic for either
model.
> The vertical out on IC101 is on pin 26. The DS25204 is very similar to
> DS25320 in Sams 4801 except the DS25204 gets it's vetical B+ from the smps
> off D626 cathode and not from the fly. Let us know what you find, John.
> John Mielke
> Main TV
> 636 Main St
> Longmont, Co 80501
> 303 776 6955
> 303 776 0792 fax
> www.longmontmaintv.com
> maintv2004@xxxxxxxxxxx
> ----- Original Message -----
> From: <jhoeme@xxxxxxxxxxxxx>
> To: "Techassist" <techassist@xxxxxxxxxxxxx>
> Sent: Friday, September 09, 2005 4:22 PM
> Subject: [TechAssist] Sanyo DS19204 no vert
>
>
> > Output IC501 (LA78040N) has 24V on pins 2 and 6.
> > All associated components check ok.
> > I cannot see any input pulse or ramp on input pins 1 or 7.
> > I do not have a schematic.
> > Any history on this one?
> > TIA
> > Jerry Hoeme
> > Jerry's TV Service (Estb 1978)
> > 840 So. Kansas Ave
> > Liberal, KS 67901
>
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