[TechAssist] Re: sanyo model # DS35590, chassis35590-00--dead-UPDATE-FIX
- From: Richard La Placa <continentaltv@xxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Fri, 14 Nov 2003 18:18:26 -0800 (PST)
D421, 11 volt zener in hew circuit from fbt to pin 25 of jungle was leaky.
Richard La Placa <continentaltv@xxxxxxxxx> wrote:Hello
Still stuck--I changed the jungle IC LA76170N, and still the same. Does anybody
have a pin diagram for this IC? I can't get a diagram (tritronics said NLA)
Thanks again---
Richard La Placa
Continental TV
410-778-1113 (fax&phone)
Gemini Computer & TV wrote:
---------------------------------------------------------------
Text pasted from WinSTIPS 2.0
http://www.ServiceSoftware.com
---------------------------------------------------------------
SANYO DS31590
No H/V Has Audio (After Lightning Strike)
Bay Electronics Inc.
No H-Drive From Jungle I.C. ,Replace I.C.101 (La76170n) Costs About $30 From
Herman \ Sanyo Part Number 409-431-2100
---------------------------------------------------------------
SANYO DS31590
Dead. Was Shutting Down Periodically Before Dead
Peggs
Hot B+ Was Under 100v At Power On, 80v In Stand-By.
Stand-By 80v Was Ok, But Flyback Was Pulling Down Hot B+ At Turn On. Fly
Rang Good.
L40a00711
645 018 9579
---------------------------------------------------------------
SANYO DS31590
Dead. Hot Shorted
Big Pines Tv
Q402 (Ecg2331)
Q605 (Ecg290a)
D610 (Ecg519)
R603 (100k)
---------------------------------------------------------------
SANYO DS31590
Dead-No Relay-Possible Surge
Big Pines Tv
Q605(Ecg290a) And Q604(Ecg2504) In Power Supply.
---------------------------------------------------------------
SANYO DS31590
Dead-(Lightning Strike)-Fuse Blown
Bay Electronics Inc.
Q601(C4423 Or Ecg2324),Q604(C3807 Or Ecg2504),Q605(A1015 Or Ecg290a),
D612(Pc817 Or Ecg3098),4a Gma Fuse
---------------------------------------------------------------
SANYO DS31590
Dead, After Surge
Sterling Electronics
Repaired Primary Side, Q601, Q604, Q605 All Shorted.
Also Had Caps C609 Blown Apart And C626 Bulged Like A Balloon.
Set Still Dead. Replaced Ic601 Even Though It Checked Ok.
Found Q695 Leaking. Q695 Is 2sa608f. Replaced It With A Tcg290a.
---------------------------------------------------------------
Bob Waterman, CET® #RI-28
Master Technician License #9109
Service Manager / Parts Manager
Gemini Computer, TV, & Security Alarms
(508)695-7302
(508)695-7769 FAX
geminitv@xxxxxxxxxxxxxxxx
geminitv@xxxxxxx
www.geminicomputertvsecurityalarms.com
----- Original Message -----
From: "Richard La Placa"
To:
Sent: Tuesday, November 11, 2003 1:42 PM
Subject: [TechAssist] sanyo model # DS35590, chassis35590-00--dead
> Hello all,
> This set came in to me from another shop unrepairable with the FBT in a
paper bag stuffed in the cabinet and the hot shorted. I replaced the hot,
checked the fbt and re installed it. The set comes on and the picture starts
to show and shuts right down. I got as far as inserting a horiz drive signal
to the output of the IC (la76170n), where it feeds the horiz driver xistor,
and the set stays on. Something is shutting down the horiz drive and I cant
get a NLA schematic for this thing. Does anybody have a pin out of the IC
showing the shutdown pin? maby I can temporarilly disable it until I can
find out what is causing it. I remember other models shutting down because
of a couple of pnp transistors (Q371&372), but those were not instant
shutdown cases like this. The other repairman must have tried a new fbt,
because when the drive quits you can hear noise in it, but I think that is
because of the way the drive is being shut down
> TIA!!!!!
>
> Richard La Placa
> Continental TV
> 312 a Park Row
> Chestertown, Md, 21620
> http://www.continentaltv.homestead.com
> 410-778-1113 (voice & fax)
>
> ---------------------------------
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Richard La Placa
Continental TV
312 a Park Row
Chestertown, Md, 21620
http://www.continentaltv.homestead.com
410-778-1113 (voice & fax)
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Richard La Placa
Continental TV
312 a Park Row
Chestertown, Md, 21620
http://www.continentaltv.homestead.com
410-778-1113 (voice & fax)
---------------------------------
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Protect your identity with Yahoo! Mail AddressGuard
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