Master Electronics Repair !

Welcome to Master Electronics Repair! website.Here you will find:Service Modes, Circuit Diagrams,Service manuals, Firmware Update procedure, Disassemble procedure, Universal remote control setup codes, Troubleshooting, Diagnosing, Measuring, and more.... of many of LCD/LED TV/Displays,others various electronic apparates,trough many technical notes and tips/tricks to help repairing/fixing Troubles/ faults,for electrical technicians.This site helps you to save the Earth from electronic waste!

Richtige Fernseher haben Röhren!

Richtige Fernseher haben Röhren!

In Brief: On this site you will find pictures and technical information about Service Modes, Circuit Diagrams, Firmware Update procedure, Disassemble procedure, Universal remote control set-up codes, Troubleshooting and more....

If you go into the profession, you will obtain or have access to a variety of tech tips databases HERE IT IS Master Electronics Repair !.

These are an excellent investment where the saying: 'time-is-money' rules. However, to learn, you need to develop a general troubleshooting approach - a logical, methodical, method of narrowing down the problem. A tech tip database might suggest: 'Replace C536' for a particular symptom. This is good advice for a specific problem on one model. However, what you really want to understand is why C536 was the cause and how to pinpoint the culprit in general even if you don't have a service manual or schematic and your tech tip database doesn't have an entry for your sick TV or VCR.

While schematics are nice, you won't always have them or be able to justify the purchase for a one-of repair. Therefore, in many cases, some reverse engineering will be necessary. The time will be well spent since even if you don't see another instance of the same model in your entire lifetime, you will have learned something in the process that can be applied to other equipment problems.
As always, when you get stuck, checking out a tech-tips database may quickly identify your problem and solution.In that case, you can greatly simplify your troubleshooting or at least confirm a diagnosis before ordering parts.

Happy repairing!

Today, the West is headed for the abyss. For the ultimate fate of our disposable society is for that society itself to be disposed of. And this will happen sooner, rather than later.

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..............The bitterness of poor quality is remembered long after the sweetness of todays funny gadgets low price has faded from memory........ . . . . . .....
Don't forget the past, the end of the world is upon us! Pretty soon it will all turn to dust!

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All posts are presented here for informative, historical and educative purposes as applicable within fair use. NOTHING HERE IS FOR SALE !

Friday, 5 April 2019

STRS (SWITCHING REGULATORS) _ DETAILS - TYPES - TERMINAL FUNCTIONS - VOLTAGES

STRs (Switching Regulators) _ DETAILS - TERMINAL FUNCTIONS - VOLTAGES

FUNCTIONS

UC3842N/D OR UC3842BM

Function

Current mode PWM Controller.

Features

Low startup current (1ma). Automatic feed forward compensation. Pule-by pulse current limiting. Enhanced load response characteristics. Under voltage lockout with hysteretic. Double pulse suppression. High current totem-plow output. Internally trimmed band gap reference. 400KHz operation, guaranteed min.

Applications: offline switch mode power supplies. DC-TO-DC converters.

PIN NO.	FUNCTION
1	Comparator
2	Vfb
3	Current Sense
4	Rr/Cr
5	Ground (-ve supply voltage)
6	Output
7	Positive (+ve supply voltage)
8	Reference voltage

TEA 2261.

Function: SMPS control Ic. Switching pulse oscillator & error amplifier.

Pin No	Function	Voltage
1	Ground
2	Ground
3	Ground
4	Ground
5	Ground
6	Error amplifier	2
7	Error amplifier	2
8	Capacitor	0
9	Capacitor	1.2
10	Capacitor	0.5
11	Protect	2
12	Ground
13	Ground
14	Switching pulse output	1
15	Positive supply	12
16	Positive supply

TDA 8330

Function: switch mode power supply control circuit.

A low current initialization circuit. A band gap reference generator circuitry for slow start combined with an accurate setting of the maximum duty factor (Dmax). Programmable low supply voltage protection with on default value.

Pin No	Function
1	Emitter of Output Source Transistor
2	Collector of Output Source Transistor
3	Demagnetization sense input
4	Minimum Vcc threshold setting
5	Positive supply
6	Reference Current setting
7	Feedback input
8	Output error amplifier
9	Pulse width modulator input
10	Oscillator capacitor
11	Synchronization input
12	Maximum duty factor (Dmax) setting plus slow start.
13	Input current protection
14	Ground
15	Emitter of output sink transistor
16	Collector of output sink transistor

SE115N/SE117/SE140N/SE105M/SE110

ERROR AMPLIFIER.

Pin No	Function
1	Voltage sensing input [Output voltage Sample Input]
2	Output error amplifier
3	Ground

SE130NH/S1854-C1

Pin No	Function
1	Voltage sensing input
2	Output error amplifier
3	Ground

MC44603 [SMPS] CONTROL

Pin No	Function	Voltage
1	Passive supply [Vcc]	11/0.7
2	Vc	-
3	Switching pulse output	-
4	Ground	0
5	Foldb	-
6	Over voltage protector	-
7	-	-
8	-	-
9	Start supply	5.3/5.4
10	Decoupling capacitor	-
11	SS	1.3/1
12	Rp	-
13	EAout	-
14	Vib	16.4/16.3
15	Rj	-
16	Rref	-

TDA8133/TDA8138/KA7630

Function: Power on/off and voltage regulator.

Pin No	Function	Voltage
Pin No	Function	On	Standby
1	Unregulated supply voltage input	13.9	13.4
2	Unregulated supply voltage input	13.3	13.4
3	Decoupling capacitor	3.11	3.11
4	Power on/off voltage input from microprocessor	3.6	0.2
5	Ground
6	Reset voltage output	4.1	4.1
7	Not connected
8	Regulated supply output (1)	8	0.6
9	Regulated supply output (2)	5	5
10	Not connected

IX 1779CE

SMPS control Ic

Pin No	Function	Voltage
1	IS	0/0
2	IN	0/0
3	MAX	0/0
4	Ground
5	Ground
6	E	2.9/2.9
7	S	2.6/2.6
8	C3	9/10
9	C1	3/3
10	C4	2.5/2.5
11	RE	2.6/2.6
12	Ground
13	Ground
14	Drive out	1.4/1.7
15	Drive Cot	10.3/10.4
16	Positive supply	11.1/11.2

STR 54041S – SWITCHING REGULATOR

Pin	Function
1	Ref
2	Base drive
3	Supply input
4	Reg Control
5	Reg control

STR 44115 – DRIVE CONTROL SOFT STARTER SW REGULATOR

Pin	Function	Voltage
1	Detector	235
2	Drive control	115
3	--	300
4	--	115
5	Soft starter	--

STR 58041 – Base drive

Pin	Function	On condition voltage	Standby condition voltage
1	Vout sense(-)	90	0
2	Base drive(B_	90	0
3	Input	300	300
4	Ground
5	Vo.control	Adj	Adj

STR50112/STR50115B/STR50103 – BASE DRIVE

Pin	Function	On condition voltage	Standby condition voltage
1	Ground
2	Base drive	100	55
3	Input	500	400
4	Output	100	55
5	Vo. control	6.6	6.4

STR 50113-M – POWER SUPPLY

Pin	Function
1	Ground
2	Reference voltage
3	Unregulated DC
4	Control voltage
5	Output

STR 50215 - POWER SUPPLY REGULATION

Pin	Function
1	Ground
2	Starting voltage
3	Unregulated DC input
4	Regulated output
5	Regulator switch

STR S6707N / STR S6708 / STR 6709 – POWER REGULATOR

Pin	Function	Voltage
1	Collector of switching transistor inside the STR	300
2	Ground
3	Base of switching transistor inside the STR	0.1
4	Sink	0.1
5	Drive	0.5
6	Over current protector [OCP]	0
7	Feedback	0.1
8	INH	1
9	Voltage input [supply]	9

STR S6307 / STR S6309 – POWER REGULATOR

Pin	Function	Voltage
1	Collector of switching transistor inside Ic	400
2	Common [emitter of switching transistor]	2.1
3	Base of switching transistor inside Ic	3.2
4	Drive [voltage control]	0.4
5	Drive [voltage control]	20
6	Current detector	0
7	Ground
8	Drive [base error amp:]	3
9	Pulse modulation coupler	5.8

STR 10006: SUB POWER REGULATOR.

Pin	Function
1	Error voltage output
2	Base drive input
3	Collector of switching transistor
4	Collector of error transistor
5	Ground

STR 5412; BASE DRIVE.

Pin	Function	On-condition voltage	Standby condition voltage
1	Input	310	300
2	Base drive	90	0
3	Ground
4	Output	90	0
5	Remote	30	0

STR 6020. POWER REGULATOR.

Pin	Function	Voltage
1	Unregulated voltage input	300
2	Feedback [output to input]	50
3	Error amplifier input	36
4	Switching signal output	50
5	Regulated power output	54

STR F6654. POWER REGULATOR.

Pin	Symbol	Function	Voltage
Pin	Symbol	Function	ON	STANDBY
1	OCP/FB	Over current protect feedback	1.89	1.63
2	SOURCE	Source of switching FET inside STR	0.03	0
3	DRAIN	Drain of switching transistor inside STR	325	330
4	Vin	Voltage input	16.6	14.9
5	GND	Ground

STR 456A. SWITCHING REGULATOR.

Pin	Function	Voltage
1	Switching regulator	296
2	Switching regulator	113
3	Ground
4	Switching	113

STR-D 1005T. SUB POWER REGULATOR.

Pin	Function	Voltage
1	Charging capacitor	5
2	Start bias input	0.2
3	Regulator	300
4	Ground
5	Feedback	0

STR 440. ERROR AMPLIFIER DRIVE AND SWITCH.

Pin	Function	Voltage
1	Supply voltage	282
2	Ground
3	Switched regulated supply voltage out	107.5
4	Switch	0.3

STR 441.

Pin	Function	Voltage
1	Switching	282
2	Switching	0
3	Error amplifier	107.5
4	Switching	0.28

STR SMR40000. POWER REGULATOR.

Pin	Function	Voltage
1	PLIM	38mv
2	Gate	990mv
3	Drain	310v
4	Source	37mv
5	Feedback	-9.41v

STR 2SD680R / 3SD1265R. POWER REGULATOR.

Pin	Function	Voltage
1	Collector	278
2	Ground
3	Base drive	18
4	Control	0.7
5	Control	6.7

STR 370. POWER REGULATOR.

Pin	Function	Voltage
1	Input supply	132
2	Regulated voltage out	109
3	Ground
4	Error amp. Onput [Ref. Voltage]	110

STR371. POWER REGULATOR.

Pin	Function
1	Regulator
2	Regulator drive
3	Error amplifier
4	Regulator

STR 50100. POWER REGULATOR.

Pin	Function
1	Ground
2	Base
3	Collector
4	Emitter
5	Control

STR 50213. POWER REGULATOR

Pin	Function
1	Ground
2	Base
3	Collector
4	Emitter
5	Control

STR 40115. POWER REGULATOR.

Pin	Function
1	Error amp input
2	Base drive
3	Collector
4	Output
5	Ground

STR HM9207. BASE DRIVE.

Pin	Function
1	Input
2	Not connected
3	Positive bias
4	Base drive
5	Negative bias
6	Output

STR 56041. SWITCHING REGULATOR.

Pin	Function
1	Ref
2	Base drive
3	Collector
4	Emitter
5	Base