[TechAssist] Re: Sanyo 31" DS31590 dead, HOT shorted. other???
- From: "cesha" <cesha@xxxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Fri, 9 May 2003 13:27:25 -0500
Philip
You can only replace this Sanyo transistor w/ Sanyo part # 405-056-8701. No
substitute can be used in Sanyo TV's. I hope this is the information you
needed.
Have a NICE DAY !
GOD Bless,
Doyott Collins
Collins Electronic Service
1122 South Main St.
Hope, AR 71801-7237
Ph 870-777-3429
Fax 928-223-8201
E-Mail cesha@xxxxxxxxxxxxx
----- Original Message -----
From: "Philip Bader" <tjanphyl@xxxxxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Friday, May 09, 2003 9:55 AM
Subject: [TechAssist] Sanyo 31" DS31590 dead, HOT shorted. other???
>
> Sanyo DS31590 (31590-02 chassis)Came in dead.
> Customer said no storm at time.Tried to turn on.Must have failed in the
> off mode.
> Only damage I found was shorted HOT Q402 (2SD1879). I removed HOT and
> in place, my 60 watt light bulb from collector of HOT to ground (emitter
> ckt) for a load.Plugged in set to see standby voltages.Immediately the
> brightness of my 60W bulb started cycling on/off, averaging about 46VDC
> in standby.
> In standby mode with the 60W bulb removed (and no HOT as well) I had a
> stable +81.5VDC.
> I reinstalled my bulb to HOT collector and pushed power, and set
> clicked on with bright light and a stable +126.5V for about 5 seconds
> and set clicks off.Push power,same 5 seconds then off again.
> I then replaced the HOT with my new sub HOT D1555 (also an NTE 2331
> equiv., not exact, but I had a bunch on hand). Stand by volts on
> collector, +81.5 VDC.
> Powered unit up with good pix, regulation and sound. My HOT runs barley
> warm.
> Close inspection found all good solder in the HV areas,including H drive
> transformer, tho I reflowed all anyway with solder to be sure.
> I am wondering if there is any histories on this model where just the
> hot goes without any other defects?
> Phil Bader
> --
> Philip Bader
> Jan Phyl TV Inc. (estab. 1976)
> 3420 Recker Hwy. Winter Haven, Fl. 33880
> Fax (863) 299-8821
> email: tjanphyl@xxxxxxxxxxxxxxx
>
>
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