[TechAssist] Re: Emerson HOT running hot & shorting.
- From: "Gemini Computer & TV" <geminitv@xxxxxxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Thu, 16 Jan 2003 10:15:55 -0500
From WINSTIPS:
---------------------------------------------------------------
Text pasted from WinSTIPS 2.0
http://www.ServiceSoftware.com
---------------------------------------------------------------
EMERSON MS2580RDA
Dead - Click Only No Snd Or Picture
Bryn Mawr Tv
R502 (1.8 Ohm 7watt) R518 (5.6 Ohm 7watt) Q401 2sd1556 C435 1uf/160v
---------------------------------------------------------------
EMERSON MS2580RDA
Dead Set
Ms2580rda Sams:2643-1
Q401 Horz Output Transistor
---------------------------------------------------------------
EMERSON MS2580RDA
Dead.
Ford'S Tv & Video Service
Shorted Hot, Q401 (2sd1555), And Open Resistor, R518 (4.7 Ohm 5 W).
---------------------------------------------------------------
EMERSON MS2580RDA
H.o.t. runs hot after replacement, even with new h driver electrolytic
Phil Bader Jan Phyl Tv
Obtain an ORIGINAL H.o.t. 2sd1556 from Emerson and it runs cooler. Still may
be necessary to attach an additional heat sink. (original emerson hot was
Toshiba brand- avail from B&D)
---------------------------------------------------------------
EMERSON MS2580RDA
H.o.t. runs hot after replacement..
Russ White suretech@xxxxxxxx
Besides bolting on an additional heatsink, i usually change the resistor
from the base of horiz output from a 1k-1/4w to a 330-1/4w
---------------------------------------------------------------
EMERSON MS2580RDA
Horiz Output Repeat Failure, Heatsink Too Hot
Q402 2sc2621, C444 .012/2kv, C445.0012/2kv, C437560pf/2kv, C435 1/160, Q401
2sd1556 H.O.T. Must use Toshiba brand h.o.t. avail from B&D a china brand
will work if larger heatsink added to h.o.t. heatsink.
---------------------------------------------------------------
EMERSON MS2580RDA
Horizontal Output Transistor Repeat Failure.
Ford'S Tv & Video Service
Loose Connection On 125v Input Pin Of Flyback.
---------------------------------------------------------------
EMERSON MS2580RDA
Hot Overheats
Greg Boyd
C401 & C408: 3.3 Ufd @ 50v ( I Used 10 Ufd ) C405: 47 Ufd @ 16v
---------------------------------------------------------------
EMERSON MS2580RDA
Hv Shutdown, Immediate
A Helper Elect
C452 100/160, Also Replace C435 1/160
---------------------------------------------------------------
EMERSON MS2580RDA
Pix & Sound Inop. Ticking, Buzz
From Cgs Elect
25v Line Measures 10v. Ic401 Shorted. Upc1398h Vert Output
---------------------------------------------------------------
EMERSON MS2580RDA
Pix And Sound Inop. Relay Clicks
Randy Evans
C435 1/160, C452 100/160, Resolder R403, R436, R439, R441, R445, R446,
R505, R506
---------------------------------------------------------------
EMERSON MS2580RDA
Shorting Of Horizontal Output Transistor, Transistor Runs Hot
Ms2580rda Sams:2643-1
T401 Horz Driver Transformer
---------------------------------------------------------------
EMERSON MS2580RDA
Shutdown (Int) With Clicking
B&W Elect
Solder Bad At Cf401 503 Khz Xtal. Off Ic201-62
---------------------------------------------------------------
EMERSON MS2580RDA
Ticking, No Sound or Pix
Georges Tv & Vcr Ser Phx Az
Q401 2sd1556,Sub Bu2508df (10a), C435 R518 1/160v, R518 5.6 Ohm 7w Also Chk
Connections On Dr Transformer.
---------------------------------------------------------------
EMERSON MS2580RDA
Ticking, Nsnp
Q401 2sd1556, R518 5.6 Ohm 10w
---------------------------------------------------------------
EMERSON MS2580RDA
Ticking,Intermittent Shut Down
Earls Tv Naperville Il
Resolder All Connections On Horiz Flyback Also Check For Bad Solder On
Associated Power Resistors In Horz Area Connections On Vert Cent Pot Were
Bad
---------------------------------------------------------------
Bob Waterman, CET® #RI-28
Master Technician License #9109
Service Manager
Gemini Computer, TV, & Security Alarms
(508)695-7302
(508)695-7769 FAX
geminitv@xxxxxxxxxxxxxxxx
geminitv@xxxxxxx
----- Original Message -----
From: "C&W Electronics" <c_w_electronics@xxxxxxxxxxx>
To: "Tech Assist" <techassist@xxxxxxxxxxxxx>
Sent: Wednesday, January 15, 2003 10:42 PM
Subject: [TechAssist] Emerson HOT running hot & shorting.
> Model MS2580RDA, Q551(2SD1556) shorted, R518(5.6 ohm 7w) open,
C435(1uf/160v) open, replaced defective parts, resoldered defective
connections.
>
> Q551 gets hot after 5 min, with slight pulling in on right side, would
short if left on. Flyback and Yoke sweep good and run cool. In Sams 2643-1
>
> Any ideas as to cause of excess heat and pulling would be appreciated.
>
> Paul W
> C&W Electronics
> Azle Texas
> ------------------------------------------
> Submit A Repair Tip For Everyone Here:
> http://www.tech-assist.org/secure/tip/main.html
> ------------------------------------------
> To REMOVE your email address, click here:
> http://www.tech-assist.org/unsubb.html
> To CHANGE your email address, click here:
> http://www.techassist.net/forms/change.html
>
>
------------------------------------------
Submit A Repair Tip For Everyone Here:
http://www.tech-assist.org/secure/tip/main.html
------------------------------------------
To REMOVE your email address, click here:
http://www.tech-assist.org/unsubb.html
To CHANGE your email address, click here:
http://www.techassist.net/forms/change.html
Other related posts:
