Smashing repair and video mod dave :-D I'm supprised that anyone would want to monitor a computer with such a low res device. Fuses can blow for no obvious reason, old capacitors current leak at switch on is a possible. For a video input i look for the sound trap ceramic filter, and look around it's input for the video+audio split. Some old sets have an odd bias to the video and need a mod.
@@jaceknasalski1422 cheap ones yes, proper cable headend such as blonder tongue or wavecom such as I have in my distribution system have saw filtersz and are true vestidual sideband as opposed to am. They look fantastic. Still limit the upper frequency bandwidth due to roll off for sound carrier.
@@12voltvids using proper gears and cables you can achieve very good picture quality. There is one reason when you really need a separate A/V input: a computer monitor for retro gaming. Limited bandwidth of the RF channel reduces picture quality especially when displaying a high density text.
Very cool indeed! I have an old Panasonic B&W that I picked up at the PX in Fort Bliss Texas back in the early 70's. The best thing about it was the color of the case. It happened to be Olive Drab, matched all the military equipment we took with us out to the desert around Bliss, so it was no problem taking it along in my Radio Teletype Van that was mounted on a 5/4 truck. Since I dealt with classified documents in the rig, it had to be buttoned down most of the time, which was nice since the old unit still had the Air Conditioner mounted on it from back during the Vietnam war where the equipment would fail if it got to hot, thus a nice air conditioner that kept me and my equipment nice and cool even in the worst of the desert heat around Bliss (we used to love the old quote "Ignorance is Bliss") I spent many an hour watching TV on that little set, I even had an extra antenna mounted on the rig that I put up when we got to our base camp area to serve the TV since the van was pretty much radio wave proof on the inside to keep the powerful AM and SSB radios quiet and safe. The rig was built with 2 receivers and one transmitter so we could receive transmissions from both higher headquarters, and still transmit and receive from our sub-units. Since I worked with Regimental Headquarters, I was usually the Net Control Station. I think I still have that little TV around some where, probably in my back room that has become a storage area for my obsolete computers and every thing else that someone thought needed to be out of the way but still kept. Well my good wife, who did that has passed away some 3 months ago now, the pain of her loss after 51 years of wedded bliss still hurts to type about, tears have suddenly appeared on my old cheeks as I type this. She died just 4 days after our 51st wedding anniversary, I buried her with the golden rose I gave her on our 50th in her hands, and a beautiful necklace that proclaimed my ever lasting love around her neck, she wore her wedding dress to the grave, it was her requested garb. Cancer is a cruel disease and it had it's way with her, 4 months after discovery of the disease and she was gone.
Fascinating and good repair job there Dave. Rare to see a little B&W TV with AM/FM radio anywhere even at a thrift store nowadays.When you do see one they want quite a bit for them! Dang collectors! Looks like this one had some hours on it but not necessarily watching the TV .
I found a schematic and figured out the audio input! At 20:29 the back of IC 101 is shown as he desolders a leg from the board. To add audio input you must desolder another leg- see the top right of the IC 101 outline, desolder the leg one to the left of the far top right corner. Then, tack a wire from the positive leg of C114 (the leg closer to IC 101) to the positive of your audio input jack. You can attach the ground wire from your audio jack to the tuner, just as he did for the video ground.
Great video, I did myself one like that with a cheap bw 4" crt like a week ago but trying to find out how the hf to if converter was wired I ended burning it, TV looks just great with component only now lol.
Would’ve loved to see the board, and explanation of what & why he is he is testing with his multimeter. Im going to try this and eventually figure it out. Ill try to record it and upload something similar from a newbie’s perspective. Thanks for doing this.
Nice one Dave, I have a similar little set to that in the loft that we used for camping during the early 80's. Havent the heart to throw it, I just need an agile-modulator- a decent one- to breath life back into it.
Nicely done. I have a few small portable TVs around that I must repair. Perhaps I'll add a composite input to them as well. By the way, I have some bigger 14" CRTs with rf input only. I have heard since there is no proper isolation from mains on their circuit boards, I should not be adding video inputs to these TVs. Am I correct?
I got something similar and i want to fix it. 👍. Thanks for doing this. Mine is only about 6” square. “Cosmo” Model TVR-601-32. 12v TV Meant for car, office, wherever.
Hello there and thank you for your videos. Very informative. I guess it helps to know what you're doing. (that's not me...) Anyhow, watching this, it reminded me of an OLD small solid state Panasonic TV that I bought as a teenager in the middle 70s. It sits in the closet since the only antenna or connection that it has, is a rod antenna that now can't catch anything from the air. So I was wondering if there was a way to open it and connect something with an antenna cable that would go to channel convertor box that I have and play whatever I can get from it, just for fun.. That would work on the channel 3 I would think that usually is the default for outside channels. Any thoughts?
Just strap a cable to the rod antenna and to the center copper core the coaxial cable and it should do the trick if it's analog, if don't you need to mod it to accept a video input or buy a video to rf adapter and do the cable to rod thing.
He has a commercial grade modulator that "broadcasts" multiple VHF NTSC channels into his shop. He can then use the TV's own antenna to tune those channels. A lot of video hobbyists use this technique. The brand name for one of the more common modulator units is Blonder Tongue.
Hello i have problem on Sony Handycam CCD-TR425E When i put in cassete, video playback controls doesnt working i cant play the video or pause it . it only plays pauses or rewinds with remote control. do you know what causes problem or how can i fix it?
Hello sir, I wondered if I could ask for advice, I have a smart TV which has a constant 12v standby, which is only at 8.6v, iv replaced all the capacitors on the 12v circuit on the secondary side of the transformer, iv also changed the octo coupler, could you give me any pointers please? Could it be an oscillation problem? Im desperate to learn, Im not too bothered about the TV, I could just buy a new power board, but I want to learn, and you are one of the most knowledgeable people iv come across online. Thankyou
@@reacey On the secondary there's probably a reference chip like the TL431. I'd check the voltages on it, one of the pins should have 2.5 volts when the proper voltage is reached. If you're getting 2.5v, the power supply thinks it's putting out the proper voltage, so there's probably a bad resistor in the divider network near that chip. If there's an adjustment pot it will be part of that network. If there is a TL431 but none of its pins are at 2.5v there is something else wrong with the supply, probably on the primary side.
Yeah, it's possible to replace the external antenna jack with a stereo 3.5mm jack to carry both audio and video signals to the tv, thus mantaining the original look. A circuit rewire is obviously needed in that case.
No it's the same one I have been using for years. A Sony FDR-AX33. I do have a new AX53 and another old one, an AX100. These are all 4K cameras. I have a couple of tape based HD cameras as well. For my next video I will shoot it on the AX53 in 1080p60 mode as this one is so see if I notice any difference. I bought a 53 as a spare as it is no monger made, and has been replaced with the 43, but that one has eliminated the EVF eyepiece for a flip out screen only and as such is useless for me. Next video on ax53, and then back to 33 as that is the one attached to my jib arm.
