Vintage TV & Radio Tech Forum [Archive] - Videokarma.org TV - Video

Help correcting a Sony CRT TV’s distorted image (9 replies)
Sams for sale... (0 replies)
Seeking Help with Samsung CXD1334 Auto Shut Off Problem (4 replies)
"Looking for Tube Color TV Technician in Los Angeles / Pasadena Area — 1960s Magnavox (5 replies)
Cross to rca part number (6 replies)
Adding Composite Input (Capacitor Question) (80 replies)
Transistor packages matter for same PN? (4 replies)
Capacitor Appearance Fooled Me (2 replies)
Need to Replace Convergence Pot (12 replies)
Is this cap replacement too small (5 replies)
Brightness and Contrast (8 replies)
Zenith AM-FM G725 - A825 (5 replies)
RCA 630TS-KCS20 sync-sound issue (2 replies)
Need Help Finding Capacitor (7 replies)
Can Pot Be Fixed/Cleaned (6 replies)
What dictates max horizontal width and vertical height (2 replies)
Magnavox CT-220 Stretched Image on Left (1 replies)
Cross for flys and other parts (0 replies)
Crosley 9-423M. Sam's 79-4 (2 replies)
High vacuum sealant (2 replies)
Toshiba 65HDX82 - Wavy Lines (18 replies)
saftey cap 2506630020 nap (2 replies)
Photofact Sets on Internet Archive (8 replies)
Tuner part for old Sylvania 54-93865-4 ? (2 replies)
What does this magnavox selector switch control go to? (5 replies)
What does everybody use for molded capacitor replacement? (6 replies)
Electrolytic Capacitor Replacement? (19 replies)
First Time Predicta Owner (10 replies)
Horizontal output, transformer for a Crosley Tv (1 replies)
Crt (0 replies)
What in the heck is this? Deft Laboratories Image Processing Module (1 replies)
Adding Composite Video Input to my RCA CTC21 Chassis (9 replies)
Philco 4206S / 7L40AJ chassis (3 replies)
light green surround paint (3 replies)
Found a stash of flybacks, and misc (0 replies)
IR filter for old home tube camera question (6 replies)
Reading a Sams (3 replies)
Weird JVC 503B "RF converter" pinout? (10 replies)
Zenith no snow, no recieve (5 replies)
Admiral 20X1 frequency. (8 replies)
Spectrum, TCM and 4:3 (5 replies)
Is this right for a BK 1077B (5 replies)
want to try fixing a VCR (4 replies)
90s projection crts (4 replies)
Tv picture widener (6 replies)
rca production number to part number cross (5 replies)
Admiral 19A12 High Voltage Issue (8 replies)
RCC index books scan (4 replies)
Sony VO-4800 not threading up (5 replies)
Jackson 707 crt tester problem (0 replies)
Variac amp (2 replies)
Crt (0 replies)
Rca ctc12 - (15 replies)
Sparton 4940TV sound issue (6 replies)
Zenith Cobramatic Stroboscope - Muffled Audio? (11 replies)
Philips 14cf1014 Comp+RGB mod help (1 replies)
Learning How to Test Tubes with Sencore - A Few Questions (3 replies)
Basic GE AA5 Clock Radio - No Signal at one end of the band? (6 replies)
RCA 630TS alignment setup question (1 replies)
Zenith Integrator - Replacement (3 replies)
Farnsworth 651P (8 replies)
Vintage Tube TV Service near Cleveland, OH? (0 replies)
faint horizontal retrace lines on my Magnavox (4 replies)
Philco AFC Dual Diode (1 replies)
RCA Canada TV 1952 (or 3) model 20-T-74 (0 replies)
Repairing an old Rooftop Antenna (14 replies)
Is there a good electronics parts store in NYC? (0 replies)
12W6 versus 12L6 (6 replies)
Emerson 648 (0 replies)
Is our accepted color space wrong? (0 replies)
Help with tube collection (3 replies)
Got a TV with lingering issues ? (6 replies)
RF Distribution Amp/Splitter (8 replies)
Unusual vertical collapse (2 replies)
EIA numbers (1 replies)
Packard Bell 17VT1 Audio (23 replies)
Zenith parts crossreference (2 replies)
Unable to open remote control (9 replies)
many data sheets for Meissner, Miller, etc. (0 replies)
Zenith Hybrid Low HV (16 replies)
'51 Magnavox vertical osc transformer (5 replies)
Cutoff vs emissions (2 replies)
Best place to get odd value Tv caps (3 replies)
Blonder Tongue Question (8 replies)
No pic, hear static on GE model YM9473PC (3 replies)
Vintage TV needs onsite service in Boston area (2 replies)
Can you tell me what this thing is? (11 replies)
Plans to build a CRT brightener? (6 replies)
Getting a signal into vintage sets? (4 replies)
6BK4 B vs 6BK4 and adding new tube to old set (2 replies)
1973 Pickup Radio Stuck Tuner (3 replies)
Is this possible..... (10 replies)
Identify transformer (8 replies)
Looking for CRT 21FJP22 or 21FBP22. (0 replies)
Tube tester? Should I buy this? (1 replies)
Help needed for 1986 RCA Colortrak tv..... (5 replies)
Zenith Chromatenna leads (4 replies)
Looking to Learn about CRT TV/VCR Repairs from someone based in Adelaide (0 replies)
Portacolor service manual (1 replies)
Looking for specs & schematic for acdc electronics model 51-200 (0 replies)
Yoke replacement lookup (5 replies)
Portacolor dead IF, am I on the right track? (9 replies)
Help repairing a 60s Philips television (2 replies)
TV Tuner's Channel 3 Gone Bad (1 replies)
Local line voltage (23 replies)
Odd focus problem in 1938 British set (2 replies)
What is it? (3 replies)
Best antenna solution for AM/FM/TV combo? (7 replies)
3D printing replacement TV and radio parts (10 replies)
1948 Motorola VX101 brightness changes picture size (9 replies)
Old Ford Radio (10 replies)
Non-polarized doubler capacitor...can I change it? (9 replies)
Recommendations for a "video stabilizer" box? (2 replies)
Any use for a MTS stereo decoder in 2021? (13 replies)
Dumont RA 103C (2 replies)
Fisher 100-T Project (2 replies)
Needing a ride to early television swap meet and silent auction on June 5th 2021 (1 replies)
What's going on in this circuit? (12 replies)
Variac? (9 replies)
Sony TV-511 Power Cord (1 replies)
Video input mod and vertical poor interlacing (11 replies)
Early 1960s Sears silvertone black and white tv repair (16 replies)
NEC -PM 1971A Service Manual (5 replies)
NEC PM-1971A Monitor (0 replies)
Teletext (11 replies)
Major Horizontal Pulling Issue on Pilot TV-37 (0 replies)
Zenith Model / Chassis H2437R porthole TV (6 replies)
HV anode question (2 replies)
Measuring HV in an electrostatic set, tips? (1 replies)
25Z6 Rectifier to Solid State Conversion? (9 replies)
Picture/Signal Disappearing Act on My Pilot TV37 (9 replies)
Convergence rectifier question (3 replies)
Tube amp questions (15 replies)
Best way to filter noise for AM band? (10 replies)
Replacing Mica caps with film or ceramic? (3 replies)
Sony FD-230 audio (1 replies)
New testing equipment check (3 replies)
Stereo speakers far too sensitive (15 replies)
Need a couple pages from Riders Vol. 5 (0 replies)
Fuse Question (7 replies)
Need replacement for DuMont 20D-4901-2 Vertical blocking transformer (1 replies)
Philco 50-T1403...good starting point? (2 replies)
New piece of equipment: Eico oscope (2 replies)
How to test for HV when you can't access picture tube/2nd Anode (1 replies)
Recreating a Selenium AFC dual diode from 2 diodes? (6 replies)
HDMI to F connector-what setup to use? (8 replies)
Old TV circuits, chapter 43: Sound IF (12 replies)
IF Coil (0 replies)
Two pieces of equipment: BK 1470 scope/HP 3200b signal gen (5 replies)
New mirror in mirror-in-lid TV? (4 replies)
Sweep Generator Waveform Question (11 replies)
Removing the HV / 2nd Anode for Alignment? (5 replies)
Can anyone identify this tv brand? (5 replies)
Zenith 25DC56 CC- no color sync (12 replies)
What's going on with this power supply? (7 replies)
What kind of interference is this? (5 replies)
Tweeting Sound and no HV from the HV cage (3 replies)
Testing a Signal Generator (7 replies)
Collapsed vertical picture in Motoral 1959 (16 replies)
Replacing a peaking coil core (0 replies)
Sync Separator Diode Replacement (20 replies)
Injecting composite video into a Hot Chassis set? (5 replies)
What is "Spiking" a coil to check bandwidth? (2 replies)
Heathkit SG-8 Selenium Rectifier replacement (3 replies)
What's the conventional wisdom on NOS electrolytics? (12 replies)
A curious thing in this Predicta (3 replies)
Oddball questions about CRT construction (3 replies)
About Adjusting 4.5 mc trap/Sound Take-off in a Single Coil Can?? (6 replies)
is a 6GY6/6GX6 a good substitute for a 6BY6? (2 replies)
Amphenol 857 CRT Commander Picture Tube Chart (0 replies)
Replacing a tube HV rectifier tube with a solid state one (15 replies)
Please help me identify this capacitor (4 replies)
Admiral Blonde TV 27k27b (2 replies)
Magnavox Windsor Imperial - TV Help (19 replies)
Buzz/overload in high contrast scenes/text (5 replies)
National SW-54 Thoughts (83 replies)
Problems with RCA TV 21-S-548 KCS88NX (8 replies)
Do I have bad flyback or Sams Photofact is wrong (Emerson 611 TV) (12 replies)
Agile Modulator, Always Overdriven? (5 replies)
Replacing a Polystyrene Capacitor (2 replies)
Vintage indoor VHF Antenna (5 replies)
Tv repair needed. (0 replies)
Vintage CRT TV repair near Philadelphia (0 replies)
Sony 9-51 with vertical problems (5 replies)
Sony Trinitron tube swap SSM-14N5U (1 replies)
Color Test Patterns (15 replies)
How to get a full picture on my 1976 RCA XL-100 console? (2 replies)
Adding Bluetooth to AA5 radio (11 replies)
Philco Debutante issues (6 replies)
Jumpy [B&W] composite video signal from 1974 dumb terminal (14 replies)
data sheet and any TV chassis using Admiral 79D197-1 flyback? (0 replies)
Question about flybacks circuit changes (1 replies)
recommendations for large flyback models? (17 replies)
Help me ID a capacitor (3 replies)
Looking for these ads (0 replies)
1966 GE PortaColor Restoration (177 replies)
HDMI to RF, some thoughts (15 replies)
Wanted Zenith Porthole power supply (0 replies)
zenith chromacolor ii schematics/ tech/ restoration questions (3 replies)
Luxman Stereo Integrated Amp Model L-480 Issues (2 replies)
Wanted - Emerson 614 knob set (0 replies)
Aqua-dag paint for CRTs (5 replies)
Heathkit GR-25/295 thermistors/vdr (4 replies)
sick Emerson 600 (2 replies)
Motorola VT-71 after recap, small weird picture (6 replies)
Motorola VT-71, 6KV cap replacement with ceramics (1 replies)
GE Console Television B/W (2 replies)
Bypassing Predicta audio (0 replies)
Is this cheating? Bypass audio through a stereo (2 replies)
Ion Trap Service Tips (5 replies)
What is the uF value of these can caps? (4 replies)
Suggestions for Tight Bakelite Knobs? (5 replies)
Impossible IF alignment instructions? (0 replies)
recommendations for a composite to RGB demod chip? (3 replies)
What is it? (7 replies)
Sylvania B/W TV (1 replies)
It's been a long time....ge a52 question (6 replies)
What could be causing this problem? (8 replies)
Can't tune in VHF high channels (2 replies)
Received this tv for free. Can this be fixed with copper tape? (12 replies)
Need Help With Korean A-One AM-0629 Chassis (0 replies)
Vectrex HP-3000 Dead Logic Board (0 replies)
Ctc 15 clone/Curtis Mathes C20 Horz output grid not negative. (13 replies)
Sony tmr-fm70 (0 replies)
Batteries and a strap for a vintage Zenith hearing aid (10 replies)
Partial horizontal scan on RCA 8t241, 9t240, etc. chassis (10 replies)
Somebody give me a little nudge? Philco with no video (18 replies)
rca_14pd8053 Strange noise (37 replies)
7189 vs 6BQ5/ EL84 tubes (4 replies)
Curtis Mathes C20 Ctc 15/16 clone woes (8 replies)
Filter Block Capacitor Decoding (3 replies)
burn-in and bleaching the 7WP4 projection CRT screen (3 replies)
adjusting cathode current on a ctc 16x (1 replies)
free canadain tv service date or pickup from sechelt peninsula bc canada (0 replies)
1969 Delco 8 track AM Radio (11 replies)
Can you identify this vintage TV and is it worth picking up? (11 replies)
Any tips for polishing plastic dial covers? (5 replies)
ECG replacement guide has the wrong part number? (0 replies)
Philco Seventeeners - Retrace lines (2 replies)
RCA combo info (2 replies)
Hello, found a flyback transformer, anyone knows what it went to? (0 replies)
TV recapping advice needed. (3 replies)
Mystery VHF tuner transistors (0 replies)
Rca CTC-25 overview and help (64 replies)
Zenith 7H918 FM Radio Restoration. (14 replies)
TV Tech Basics: Oscillators vs. Multivibrators (5 replies)
Indoor antenna advice? (23 replies)
Reel-to-Reel tape deck audio problem (7 replies)
Silvertone 1771 (12 replies)
Portable TV displaying whitescreen instead of static (9 replies)