[TechAssist] Re: Mits CS3515R intermittent start up
- From: "Gemini Computer & TV" <geminitv@xxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Thu, 08 Dec 2005 09:34:22 -0500
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Text pasted from WinSTIPS 2.0
http://www.ServiceSoftware.com
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MITSUBISHI CS3515R
Dead : Relay Click Only : Smps Not Running But Bas Raw B+ Feeding The
Circuit
Jeff Stielau : 12/9/03 : Shoreline Electronics Repair
Open Trace From Cathode Of D904 To Pin5 Of Ic901 (Strs5141g) Caused By
Corrosion From Leaking C914 (470uf 50v).
You Can Test This Chassis Smps Power Supply On The Bench By Removing The
Horizontal Output Transistor To Prevent Hv Developing.
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MITSUBISHI CS3515R
Dead After `Lytic Replacement, Still No Turn On
Palmetto Electronics, Inc.
Check Front Control Pcb 4 H20/Liquid Spill Damage(Probably Due 2 Customer
Cleaning Crt); Also Check D7x1, 3v 400/500mw Zener Diode 4 Lkg Or Short.
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MITSUBISHI CS3515R
Dead Set <Common Problems>
Palmetto Electronics, Inc.
Don'T Waste Time 2 Check:Just Pull `Em & Change All That Show Signs Of Lkg
Underneath:C921 2200uf/35v; C925 2200uf/50v; C926 1000uf/35v; C930
2200uf/35v (Mayb 50v In Some Units);C914 470uf/50v; C916 10uf/100v(Mayb
Lo-Esr Type In Some Units{Larger Size Than Normal Is Key Here}); C965
2.2uf/200v(Mayb 250v In Some Units); C538 1uf/200v(Mayb 160v Or 250v In Some
Units); C933 2200uf/25v; C935 220uf/10v(Mayb Another Of These Right Next 2
C935 In Some Sets); Inspect All Small `Lytics On Signal Pcb That U Can
See(I.E., Standing Up Away From Pcb)4 Lkg Signs, As Well As Giving Pcb Close
Visual Inspection 4 Electrolyte Lkg Around All `Lytics---Don'T 4 Get 2 Look
On Both Sides Of Pcb!
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MITSUBISHI CS3515R
Dead. Clicks At Turn On
Joe Searles Tv Repair Virginia Beach, Va 23452
Replaced Open R960 (.33 Ohm 1w Resistor)
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MITSUBISHI CS3515R
Dead. Relay Clicks
John Kincaid Sos Tv
Ic901 Strs5141 Bad All Caps/Res Check Good Sk Makes One
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MITSUBISHI CS3515R
Dead. Relay Clicks
Blue Ribbon Tv
R903 Open 220k-1/8w
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MITSUBISHI CS3515R
Power - shuts down
Whitehall tv
C916 10uf
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MITSUBISHI CS3515R
Power - turn off intermittent, or flickering on & off
Daves Tv
C5h9 47/50. (measured 5 mfd). May have caused Q5h4 to fail
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MITSUBISHI CS3515R
Power / Goes Dead After On Awhile
Phil Hull
After Spending Way To Much Time On This Unit And Replacing 8 Leaky Caps, I
Found That The Power Relay K901 Would Unlatch Itself After It Was Hot.
Replace K901 #278p049040
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MITSUBISHI CS3515R
Power Supply Int. Relay Chatter
From Mitsubishi
Intermittent Relay Chatter At Power Up.Check The Value Of C5h9 (47uf 50v)
Located On The Defl/Pwr-Pcb. Pt#181p355080
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MITSUBISHI CS3515R
Power Supply No Power
From Mitsubishi
Relay Engages But No Start Up. Suspect Open L909. Located On Pcb-Def At
Ic901 Pin 1. Pt# 411p012010
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MITSUBISHI CS3515R
Power Supply Shut Down At Power
From Mitsubishi
R956 May Have Opened Causing Current Limiter Q906 Bias To Be Incorrect.
Located On Pcb-Def At Emitter Of Q906. (100k 1/2w)
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MITSUBISHI CS3515R
Power Supply : Clicks On And Off Or Pulsing On/Off After Typical Recap
Jeff Stielau : 8/31/05 : Shoreline Electronics Repair
Q5h4 Leaky E-C
Note : This Power Supply Can Be Bench Tested Easily. Remove The Horizontal
Output And Clip A 100 Watt Bulb From The Collector Pad To Ground.
Note : Using A 150w Bulb Will Cause The Chassis To Still Pulse As The
Largere Bulb Will Draw Too Much Current.
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MITSUBISHI CS3515R
Power Turns On/Off Repeatedly, Must Unplug
Bryn Mawr Tv
Replace Following Parts, Don'T Check
C940 (22 Ufd 16 V Np) R956 (100k 1/4 W) C5h9 (47uf/50v) C5h8 (1uf/50v)
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MITSUBISHI CS3515R
Power Up Relay Action No Snd/No Pix
A-1 Tv Van.Wa.
Solder T905 Main Pcb
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MITSUBISHI CS3515R
Power up inop. in shutdown
Meder's Tv
Ic901, R903 increased in value, 2200, 1000uf in smps (4)
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MITSUBISHI CS3515R
Power up inop. no relay click
Larry Zukas
R922 5.6k-1/2w in relay circuit
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MITSUBISHI CS3515R
Power-Intermittent No Start-Up
Palmetto Electronics
Check 4 Poor Solder Connections @ All Pins Of "Ka" Connector.
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MITSUBISHI CS3515R
Pulsing on/off
Charlie
C5h9, Q5h4, R5k7
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MITSUBISHI CS3515R
Relay Chatter At Power Up (Intermittant)
C5h9 47uf/50v On Deflection / Pwr Board
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MITSUBISHI CS3515R
Shutdown (Int)
Earls Tv Naperville Il
Check C5h9 Between B&E Of Q5h4 [47 Mf 50v] In X-Protect Ckt On Defl Pcb
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MITSUBISHI CS3515R
Shutdown (Int)
G5h4 Leaky
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MITSUBISHI CS3515R
Shutdown (Int)
Earls Tv Naperville Il
C940@ Q906 E/B Set Shuts Down At Start Up. Press On/Off Several Times In
Sucession Set May Stay On For A Random Length Of Time. 22mf Bp 25v
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MITSUBISHI CS3515R
Shutdown (Int)
Earls Tv Naperville Il
Check C940 22mf 16v Between B&E Of Q906 In Current Lmitter Ckt On Defl Pcb
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MITSUBISHI CS3515R
Shutdown (Int)
Earls Tv Naperville Il
Check 130v Reg Line Check C914 [470mf 50v] Andd C916[10mf 100v] On Defl Pcb
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MITSUBISHI CS3515R
Shutdown (Int)
Earls Tv Naperville Il
Relay Engages But No Start Up Check L909 On Pcb-Def At Ic901 Pin1
Pt#411p012010
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MITSUBISHI CS3515R
Shutdown (Int)
Earls Tv Naperville Il
Relay Engages But No Start Up Check L909 On Pcb-Def At Ic901 Pin1
Pt#411p012010
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MITSUBISHI CS3515R
Shutdown (Int)
Earls Tv Naperville Il
R956 May Have Opened Causing Current Limiter Q906 Bias To Be Incorrect
Located On Pcb-Def At Emmiter Of Q906 [100k 1/2w
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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@xxxxxxxxxxx
----- Original Message -----
From: <stumpy681@xxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Thursday, December 08, 2005 9:31 AM
Subject: [TechAssist] Re: Mits CS3515R intermittent start up
Thanks Eric,
I cheched everything and it all looks good. It makes no sense. Any
other suggestions? Anyone?
TIA
Dave
Authorized Television and Electronic Services
Smithfield, VA
-----Original Message-----
From: Eric Manuel <tvman@xxxxxxxxxxxxxxx>
To: techassist@xxxxxxxxxxxxx
Sent: Wed, 07 Dec 2005 17:43:22 -0330
Subject: [TechAssist] Re: Mits CS3515R intermittent start up
Dave some tips to check out..Eric
CS-3515R DEAD, RELAY CLICK ONLY. R922 5.6K OPEN AT Q902B..rb
TELEVISION Mitsubishi CS3515R Intermittant Startup
C5H9(47uf/50v), & sometimes damages D5H0 & D5G6 (both 33v zeners)
CS3515R Dead, relay clicks no start Open R960 in power
supply,
.33ohm, off transformer secondary.
mitsubishi cs3515r dead set c914 470mfd/50 power supply
MITSUBISHI CS3515R NO POWER, GOES INTO SHUTDOWN REPLACE
IC901,
R903, AND THE 2200 AND 1000 UF'S IN SMPS
TELEVISION MITSUBISHI CS3515R GOES INTO SHUTDOWN
Q5H4 LEAKING
Eric
E M Electronics
59 Wights Rd
Deer Lake NL
Canada
A8A 2J2
Ph# 709 635 2627
tvman@xxxxxxxxxxxxxxx
stumpy681@xxxxxxx wrote:
>
> -I have a Mitsub. CS3515R that has very intermittent start up. It
> intermittently powers up, Ive replaced at least 50 caps, Set has
great
> picture. Any help is really appreciated.
>
> TIA
> Dave
> Authorized Television and Electronis Services
> Smithfield, VA
>
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