Sams Photofact

25
Nov/10
0

My Sharp TV Model 25F-M40 is dead.?

This tv is about 10 years old, which I would ilke to repair.
I replaced several parts, horizontal output driver and transistor, SCR for switching power supply, some diodes, several capacitors in the power supply circuit.
Originally fuse was burning out. Now it is continuously clicking which seems to be coming from flyback transformer.
When I check the voltage at the output of scr it is fluctuating between 85vdc and 150vdc.
A friend of mine tells me flyback transformer needs replacement.
I checked all the resistance readings on its windings with a special ohms meter, they all seems to be as indicated in the service manual.
Obviously there are no oscillations and therefore no low volatge dc outputs. No high voltage output either.
I believe flyback transformer needs air gap adjustment by using two plastic adjustment screws, so I can get oscillations, and then voltage outputs.
I have the sam photofact service manual.
I would appreciate any thoughts.
Thanks in advance

If SCR damaged usually the R fuse near this SCR is also damaged, and please don't replace it with ordinary small R, I think the problem is still around the Primary area. But I'm not sure.

VINTAGE SAMS PHOTOFACT CB RADIO SERIES MAGAZINE OCT 1970
VINTAGE SAMS PHOTOFACT CB RADIO SERIES MAGAZINE OCT 1970
$1.25
Time Remaining: 33m

Lot of 9 Sams Photofact Auto Radio  Tape Recorder Series Book
Lot of 9 Sams Photofact Auto Radio Tape Recorder Series Book
$1.99
Time Remaining: 3h 25m
Buy It Now for only: $5.99

Sams Photofact Folder Set 900 TV Radio Phonograph
Sams Photofact Folder Set 900 TV Radio Phonograph
$6.98
Time Remaining: 6h 5m
Buy It Now for only: $6.98

Sams Photofact Folder Set 903 TV Radio Phonograph
Sams Photofact Folder Set 903 TV Radio Phonograph
$6.98
Time Remaining: 6h 5m
Buy It Now for only: $6.98

Sams Photofact Folder Set 904 TV Radio Phonograph
Sams Photofact Folder Set 904 TV Radio Phonograph
$6.98
Time Remaining: 6h 5m
Buy It Now for only: $6.98

Sams Photofact Folder Set 906 TV Radio Phonograph
Sams Photofact Folder Set 906 TV Radio Phonograph
$6.98
Time Remaining: 6h 5m
Buy It Now for only: $6.98

Sams Photofact Folder Set 907 TV Radio Phonograph
Sams Photofact Folder Set 907 TV Radio Phonograph
$6.98
Time Remaining: 6h 5m
Buy It Now for only: $6.98

Sams Photofact Folder Set 911 TV Radio Phonograph
Sams Photofact Folder Set 911 TV Radio Phonograph
$6.98
Time Remaining: 6h 5m
Buy It Now for only: $6.98

Sams Photofact Folder Set 913 TV Radio Phonograph
Sams Photofact Folder Set 913 TV Radio Phonograph
$6.98
Time Remaining: 6h 5m
Buy It Now for only: $6.98

Sams Photofact Folder Set 914 TV Radio Phonograph
Sams Photofact Folder Set 914 TV Radio Phonograph
$6.98
Time Remaining: 6h 5m
Buy It Now for only: $6.98

Sams Photofact Folder Set 915 TV Radio Phonograph
Sams Photofact Folder Set 915 TV Radio Phonograph
$6.98
Time Remaining: 6h 6m
Buy It Now for only: $6.98

Sams Photofact Folder Set 917 TV Radio Phonograph
Sams Photofact Folder Set 917 TV Radio Phonograph
$6.98
Time Remaining: 6h 6m
Buy It Now for only: $6.98

Sams Photofact Folder Set 918 TV Radio Phonograph
Sams Photofact Folder Set 918 TV Radio Phonograph
$6.98
Time Remaining: 6h 6m
Buy It Now for only: $6.98

Sams Photofact Folder Set 923 TV Radio Phonograph
Sams Photofact Folder Set 923 TV Radio Phonograph
$6.98
Time Remaining: 6h 6m
Buy It Now for only: $6.98

Sams Photofact Folder Set 921 TV Radio Phonograph
Sams Photofact Folder Set 921 TV Radio Phonograph
$6.98
Time Remaining: 6h 6m
Buy It Now for only: $6.98

Sams photofact folder set 802 342 283 642 457 238 tv repair parts tube manuals
Sams photofact folder set 802 342 283 642 457 238 tv repair parts tube manuals
$49.99
Time Remaining: 6h 45m
Buy It Now for only: $49.99

Sams Photofact 2491 JVC C1926 C1936 and Quasar WU9618AP Service manual
Sams Photofact 2491 JVC C1926 C1936 and Quasar WU9618AP Service manual
$9.99
Time Remaining: 7h 42m
Buy It Now for only: $9.99

SAMS 1984 PHOTOFACT RCA COLOR TV EGA 330S EGC 333338 339 AND EJR SERIES
SAMS 1984 PHOTOFACT RCA COLOR TV EGA 330S EGC 333338 339 AND EJR SERIES
$5.00
Time Remaining: 7h 52m
Buy It Now for only: $5.00

SAMS 1975 PHOTOFACT SEARS SONY COLOR TV  TELEDYNE BW  LAFAYETTE RADIO
SAMS 1975 PHOTOFACT SEARS SONY COLOR TV TELEDYNE BW LAFAYETTE RADIO
$5.00
Time Remaining: 8h 16m
Buy It Now for only: $5.00

SAMS 1994 PHOTOFACT GE COLOR TV 20GT375FB1 JX1
SAMS 1994 PHOTOFACT GE COLOR TV 20GT375FB1 JX1
$5.00
Time Remaining: 8h 39m
Buy It Now for only: $5.00

SAMS 1995 PHOTOFACT ZENITH COLOR TV SR2549S
SAMS 1995 PHOTOFACT ZENITH COLOR TV SR2549S
$5.00
Time Remaining: 8h 45m
Buy It Now for only: $5.00

SAMS 1995 PHOTOFACT RCA COLOR TV F27351WNFE
SAMS 1995 PHOTOFACT RCA COLOR TV F27351WNFE
$5.00
Time Remaining: 8h 50m
Buy It Now for only: $5.00

Motorola 79FM21 79FM21B 79FM21R Sams PhotoFact Technical Docs
Motorola 79FM21 79FM21B 79FM21R Sams PhotoFact Technical Docs
$3.75
Time Remaining: 9h 39m
Buy It Now for only: $3.75

WESTINGHOUSE SERVICE SCHEMATIC  DATA SAMS PHOTOFACT
WESTINGHOUSE SERVICE SCHEMATIC DATA SAMS PHOTOFACT
$6.99
Time Remaining: 10h 2m
Buy It Now for only: $6.99

1960 Sams Photofact Columbia AM Receivers Model 400B 400G 400R Schematic
1960 Sams Photofact Columbia AM Receivers Model 400B 400G 400R Schematic
$1.99
Time Remaining: 10h 44m
Buy It Now for only: $2.75

1960 Sams Photofact Norelco Model L4X95T portable AM receiver Schematic Diagram
1960 Sams Photofact Norelco Model L4X95T portable AM receiver Schematic Diagram
$1.99
Time Remaining: 10h 45m
Buy It Now for only: $2.75

1960 Sams Photofact Decca DP 238 3 tube stereo phono amplifier w changer Diagram
1960 Sams Photofact Decca DP 238 3 tube stereo phono amplifier w changer Diagram
$1.99
Time Remaining: 10h 45m
Buy It Now for only: $2.75

Sams Photofact Transistor Radio TSM 69 April 1966
Sams Photofact Transistor Radio TSM 69 April 1966
$7.98
Time Remaining: 12h 8m
Buy It Now for only: $7.98

HUGE LOT 80+ Pieces VTG TV REPAIR SAMS Photofact Manuals Schematics Electronic
HUGE LOT 80+ Pieces VTG TV REPAIR SAMS Photofact Manuals Schematics Electronic
$94.99
Time Remaining: 12h 24m
Buy It Now for only: $94.99

Sams Photofact Modular Hi Fi Series MHF 20 Nov 1971
Sams Photofact Modular Hi Fi Series MHF 20 Nov 1971
$7.98
Time Remaining: 12h 26m
Buy It Now for only: $7.98

Sams Photofact Modular Hi Fi Series MHF 27 July 1972
Sams Photofact Modular Hi Fi Series MHF 27 July 1972
$7.98
Time Remaining: 12h 26m
Buy It Now for only: $7.98

Sams Photofact Modular Hi Fi Series MHF 53 Sept 1974
Sams Photofact Modular Hi Fi Series MHF 53 Sept 1974
$7.98
Time Remaining: 12h 26m
Buy It Now for only: $7.98

Sams Photofact Modular Hi Fi Series MHF 62 June 1975
Sams Photofact Modular Hi Fi Series MHF 62 June 1975
$7.98
Time Remaining: 12h 26m
Buy It Now for only: $7.98

Sams Photofact Modular Hi Fi Series MHF 87 January 1977
Sams Photofact Modular Hi Fi Series MHF 87 January 1977
$7.98
Time Remaining: 12h 26m
Buy It Now for only: $7.98

Sams Photofact Modular Hi Fi Series MHF 84 Nov 1976
Sams Photofact Modular Hi Fi Series MHF 84 Nov 1976
$7.98
Time Remaining: 12h 26m
Buy It Now for only: $7.98

Sams Photofact Tape Recorder Series TR 84 Aug 1971
Sams Photofact Tape Recorder Series TR 84 Aug 1971
$7.98
Time Remaining: 12h 27m
Buy It Now for only: $7.98

Sams Photofact Tape Recorder Series TR 37 April 1968
Sams Photofact Tape Recorder Series TR 37 April 1968
$7.98
Time Remaining: 12h 27m
Buy It Now for only: $7.98

Sams Photofact Tape Recorder Series TR 38 May 1968
Sams Photofact Tape Recorder Series TR 38 May 1968
$7.98
Time Remaining: 12h 27m
Buy It Now for only: $7.98

Sams Photofact Tape Recorder Series TR 117 Feb 1973
Sams Photofact Tape Recorder Series TR 117 Feb 1973
$7.98
Time Remaining: 12h 27m
Buy It Now for only: $7.98

Sams Photofact Tape Recorder Series TR 123 May 1973
Sams Photofact Tape Recorder Series TR 123 May 1973
$7.98
Time Remaining: 12h 27m
Buy It Now for only: $7.98

Sams Photofact Tape Recorder Series TR 24 Feb 1966
Sams Photofact Tape Recorder Series TR 24 Feb 1966
$5.98
Time Remaining: 12h 27m
Buy It Now for only: $5.98

Sams Photofact Tape Recorder Series TR 155 Oct 1974
Sams Photofact Tape Recorder Series TR 155 Oct 1974
$7.98
Time Remaining: 12h 28m
Buy It Now for only: $7.98

Sams Photofact Tape Recorder Series TR 139 Jan 1974
Sams Photofact Tape Recorder Series TR 139 Jan 1974
$7.98
Time Remaining: 12h 28m
Buy It Now for only: $7.98

Vintage Television Tube Location Guide Sams Photofact TGL 11
Vintage Television Tube Location Guide Sams Photofact TGL 11
$8.95
Time Remaining: 13h 4m
Buy It Now for only: $8.95

1951 SAMs Photofact Pub TGL 2 Television Tube Location Guide
1951 SAMs Photofact Pub TGL 2 Television Tube Location Guide
$4.99
Time Remaining: 13h 29m
Buy It Now for only: $4.99

1955 SAMs Photofact Pub TGL 5 Television Tube Location Guide
1955 SAMs Photofact Pub TGL 5 Television Tube Location Guide
$4.99
Time Remaining: 13h 29m
Buy It Now for only: $4.99

1957 SAMs Photofact Pub TGL 7 Television Tube Location Guide
1957 SAMs Photofact Pub TGL 7 Television Tube Location Guide
$4.99
Time Remaining: 13h 29m
Buy It Now for only: $4.99

1954 SAMs Photofact Pub TGL 4 Television Tube Location Guide
1954 SAMs Photofact Pub TGL 4 Television Tube Location Guide
$4.99
Time Remaining: 13h 29m
Buy It Now for only: $4.99

1956 SAMs Photofact Pub TGL 6 Television Tube Location Guide
1956 SAMs Photofact Pub TGL 6 Television Tube Location Guide
$4.99
Time Remaining: 13h 29m
Buy It Now for only: $4.99

1950 SAMs Photofact Pub TGL 1 Television Tube Location Guide FIRST EDITION
1950 SAMs Photofact Pub TGL 1 Television Tube Location Guide FIRST EDITION
$5.99
Time Remaining: 13h 29m
Buy It Now for only: $5.99

1955 SAMS PHOTOFACT MARTIN MODEL 352A KT66 12AY7 5U4G VACUUM TUBE AMPLIFIER
1955 SAMS PHOTOFACT MARTIN MODEL 352A KT66 12AY7 5U4G VACUUM TUBE AMPLIFIER
$4.70
Time Remaining: 13h 49m
Buy It Now for only: $4.70

TR B Sams Photofact Tape Recorder 41 42 43 47 50 55 56 59
TR B Sams Photofact Tape Recorder 41 42 43 47 50 55 56 59
$30.00
Time Remaining: 14h 1m
Buy It Now for only: $30.00

TR D Sams Photofact Tape Recorder 36 37 38 39 40 41 42 43
TR D Sams Photofact Tape Recorder 36 37 38 39 40 41 42 43
$30.00
Time Remaining: 14h 1m
Buy It Now for only: $30.00

TR H Sams Photofact Tape Recorder 93 100 109 130 170 174 177 178
TR H Sams Photofact Tape Recorder 93 100 109 130 170 174 177 178
$30.00
Time Remaining: 14h 2m
Buy It Now for only: $30.00

TR I Sams Photofact Tape Recorder 179 180 181 182 183 184 185 186
TR I Sams Photofact Tape Recorder 179 180 181 182 183 184 185 186
$30.00
Time Remaining: 14h 2m
Buy It Now for only: $30.00

TR J Sams Photofact Tape Recorder 187 188 189 190 191 192 193 194
TR J Sams Photofact Tape Recorder 187 188 189 190 191 192 193 194
$30.00
Time Remaining: 14h 2m
Buy It Now for only: $30.00

TR K Sams Photofact Tape Recorder 195 197 198 199 200 201 202 203 204 205
TR K Sams Photofact Tape Recorder 195 197 198 199 200 201 202 203 204 205
$30.00
Time Remaining: 14h 3m
Buy It Now for only: $30.00

TR L Sams Photofact Tape Recorder 206 207 208 209 210 211 212 213 64 93
TR L Sams Photofact Tape Recorder 206 207 208 209 210 211 212 213 64 93
$30.00
Time Remaining: 14h 3m
Buy It Now for only: $30.00

PHILCO MODEL 48 1253 Sams Photofact ORIGINAL FREE USA SHIPPING
PHILCO MODEL 48 1253 Sams Photofact ORIGINAL FREE USA SHIPPING
$9.99
Time Remaining: 14h 7m
Buy It Now for only: $9.99

Lot of Sams Photofact and Reel to Reel Cassette schematics books
Lot of Sams Photofact and Reel to Reel Cassette schematics books
$25.00
Time Remaining: 23h 22m
Buy It Now for only: $25.00

PHILCO G 1606L M G 1606SL 123 G 1606SM 123 SA 1000 Sams Photofact FREE US SH
PHILCO G 1606L M G 1606SL 123 G 1606SM 123 SA 1000 Sams Photofact FREE US SH
$9.99
Time Remaining: 1d 2h 11m
Buy It Now for only: $9.99

Magnavox 171AA Preamp Sams PhotoFact Tech Docs
Magnavox 171AA Preamp Sams PhotoFact Tech Docs
$4.00
Time Remaining: 1d 3h 55m
Buy It Now for only: $4.00

Knight Model KN 515 Amplifier 92SX400 Sams PhotoFact Tech Docs
Knight Model KN 515 Amplifier 92SX400 Sams PhotoFact Tech Docs
$4.00
Time Remaining: 1d 3h 55m
Buy It Now for only: $4.00

Knight Model KN 530 Amplifier 92SZ402 Sams PhotoFact Tech Docs
Knight Model KN 530 Amplifier 92SZ402 Sams PhotoFact Tech Docs
$4.00
Time Remaining: 1d 3h 55m
Buy It Now for only: $4.00

Regency Model HF 350P Pre amplifier Sams PhotoFact Docs
Regency Model HF 350P Pre amplifier Sams PhotoFact Docs
$3.75
Time Remaining: 1d 3h 56m
Buy It Now for only: $3.75

Sams Photofact Zenith 13X16 13X16Z13Y16 13Y16Z
Sams Photofact Zenith 13X16 13X16Z13Y16 13Y16Z
$6.00
Time Remaining: 1d 5h 18m
Buy It Now for only: $6.00

Sams Photofact Bradford Models 60665 60673
Sams Photofact Bradford Models 60665 60673
$6.00
Time Remaining: 1d 5h 20m
Buy It Now for only: $6.00

Sams Photofact Motorola Model PP248FT Ch CHS 3505
Sams Photofact Motorola Model PP248FT Ch CHS 3505
$6.00
Time Remaining: 1d 5h 20m
Buy It Now for only: $6.00

Sams Photofact Symphonic R 813 3 R 814 1X
Sams Photofact Symphonic R 813 3 R 814 1X
$6.00
Time Remaining: 1d 5h 21m
Buy It Now for only: $6.00

LARGE LOT 13 LBS SAMS PHOTOFACT RADIO TV PHONOGRAPH MANUALS
LARGE LOT 13 LBS SAMS PHOTOFACT RADIO TV PHONOGRAPH MANUALS
$28.88
Time Remaining: 1d 5h 47m
Buy It Now for only: $28.88

SAMS PHOTOFACT FOLDER SET NO SET 620 FEB 1963
SAMS PHOTOFACT FOLDER SET NO SET 620 FEB 1963
$15.99
Time Remaining: 1d 6h 10m
Buy It Now for only: $15.99

Sams Photofact Index  Technical Digest July August 1951 No 27 Great Condition
Sams Photofact Index Technical Digest July August 1951 No 27 Great Condition
$18.99
Time Remaining: 1d 7h 16m
Buy It Now for only: $18.99

Hallicrafters Com Receiver Sams PhotoFact S 80
Hallicrafters Com Receiver Sams PhotoFact S 80
$4.00
Time Remaining: 1d 9h 16m
Buy It Now for only: $4.00

Sams Photofact 1878 Hitachi CQ3DX S JCPenney 685 1014 Quasar S TS 970N Jan1980
Sams Photofact 1878 Hitachi CQ3DX S JCPenney 685 1014 Quasar S TS 970N Jan1980
$1.99
Time Remaining: 1d 9h 29m
Buy It Now for only: $1.99

McGohan MG 10B Amplifier Sams PhotoFact Tech Docs
McGohan MG 10B Amplifier Sams PhotoFact Tech Docs
$7.99
Time Remaining: 1d 9h 54m
Buy It Now for only: $7.99

Masco MA 77 MA 77C Amplifiers Sams PhotoFact Tech Docs
Masco MA 77 MA 77C Amplifiers Sams PhotoFact Tech Docs
$4.00
Time Remaining: 1d 9h 54m
Buy It Now for only: $4.00


Comments (0) Trackbacks (0)

No comments yet.

Sorry, the comment form is closed at this time.

No trackbacks yet.