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Re: NO POWER TO THE UNIT SV5000 VCR
If you have some tech savvy and a voltmeter, you could check the power supply voltages. This circuit is likely in the close vicinity of the fuse. On the output side you should see a +5 volt, +12 to 15 volt, and perhaps a -35 volt (approx). The +5 supplies the logic circuit, +12 the motors.
If these voltages are missing, or way out of tolerance, you will have a dead unit. A frequent cause of problems in the supply is bad electrolytic capacitors, especially in the older units (Panasonic manufactured rigs, late '80s/early '90s). Possible values on these capacitors: 2200MFD/10V 1000MFD/16V and several others. Replacements can be supplied by MCM electronics, Mouser electronics. I use the Panansonic FC series from Digi-Key Electronics.
If this is a high dollar > $250 VCR, it might be worth service center repairs. If not, then it is a disposable (unfortunate, but the way it is with most modern electronics).
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if there is power to the unit and its no go, there will be something blown internally. Either a board fuse or a board component. You will need a multimeter to test and some electronics knowledge to determine which part has failed.
If the unit is totally dead meaning no standbye light of or nothing on the display its dark, then you may of blown the AC line fuse. This is the first thing to check the fuse is inside the unit you can trace its location by taking off the top of the VCR and tracing the pwr cord to the point where it connects to the power supply, here is where you will find the AC line fuse use a ohm meter set on continunity to check the fuse for open condintion. If open or blown replace with same voltage and Amperage rating as indicated on the board or the fuse itself. If you find the fuse is good then you have a power supply standbye voltage missing and is related to the power supply. In which case it may be cheaper to just purchase another.
If unit is still under warranty return it. If unit is still sold at the orginal place of purchase buy another and return the first one stating it wont work and get a refund
1) power source is good? (receptical on the wall or power unit. Locate DVD rec. to another receptical and check Rec. again)
2) power cord going to unit is good, no cuts or melted spots
3) power setting on unit is correct (small red slide type buttong for different country voltage settings)
4) internal fuse, change it even if it doesn't look bad.
5) Weigh the cost of a new one to the repair cost of the old one. If you buy a new one get a good brand RCA is still one of best and longest lasting.
1. Make sure the AC outlet is good. 2. Make sure there is no damage to the AC line cord.
3. Look to see if there is a fuse at the rear of the unit. It's usually located inside a black circular housing with a screw off cap that says "fuse".
If not, unplug the unit and remove the outside cover. Look for a blown fuse on the motherboard or power supply. Replace it with the EXACT value of the original fuse. You can purchase a new fuse at Radio Shack or hardware store or auto parts store. Try powering up the unit again and see if it works now or whether the fuse blows again. If it blows again, the power supply may have been damaged.
Please let me know if I can be of further assistance to you.
1. Check that the AC outlet is working.
2. Check that the AC power cord is ok with no damage.
3. Unplug the unit, remove the cover and check for a blown fuse.
If blown, replace with a value that is the EXACT value as the original.
4. If the fuse blows again or the unit is still dead, you most likely have a problem in the power supply section.
In that case, you'll need to take it to be serviced.
Please let me know if I can be of further assistance to you.
Hi when you switch it on does anything light up like the display or standby light if not then it is going to be the internal fuse needs replacing these are cheap to buy it is located where the powe lead goes into the unit and it is a glass fuse take it to shop to make sure you get correct fuse let me know how you get on. If the video lights up and you get standby light or any light check that the lock function on the controll isnt activated as this will cause the controll to fail let me know how you get on ok
I've got one too that the same thing is happening. Just downloaded the schematics and parts list and hope to have this repaired soon. If someone has repaired this before, please let me know. So far, I thing the switching transformer is bad.
Have you opened it first and looked for a blown fuse. I suggest you unplug the unit and first look for a blown fuse. If this does not help, go to the retailer or the store where you purchaced the unit and see who they send them to for repair. Good Luck
Sorry but if a fuse blows theres a reason 99.999999999% of the time. as a fuse very rarly goes bad all by its self. This unit is a difficult one to trouble shoot unless you have the schematic diagram. It sounds like your missing the main b+ voltage and could be the regulator ic or a capacitor in the supply. If your not a tech you will be shooting in the dark replacing parts as you need a good muti-meter to assist you in these types of repair. Good Luck
Is it plugged in?? When was the last time you used it?? Did this happen after a storm?? What make and model of vcr?? How old is it?? We need more info if you want help on your troubles then it dosent work.