Question about RCA VR629HF VHS VCR

1 Answer

VCR POWER ON PROBLEM

Hello,

Need some advice on a vcr (power supply ?) problem, sure hope you can steer me right on it.

It’s an RCA model VR633HF, four head, nearly 8 years old. For over a month now, when I
try to turn it on (with a recording tape in the carriage) with either remote or the on/off switch, it begins
to bring the carriage up to the drum, then abruptly stops, upon which the LED display starts flashing,
with a ‘tick-tick-tick…’ sound occurring, synchronized with the LED flashes. It does this for some
3 – 5 minutes (no controls will stop it), then stops and shuts the unit off. Usually, if I turn it on again,
it starts, and every thing is normal, but sometimes I go through this THREE times to get the unit
on. When it does come on, the LED flickers a little, and the clock time must be reset. Strangely, with
a pre-programmed recording, it powers on fine, and the program is recorded, however, it still screws
up the clock after. I have tried pulling the plug (reset the cpu) several times, to no avail.

I asked a local service tech here about this problem, and he told me it was a defective power
supply ( the SMPS type), but didn’t tell me what in the circuit to look at. I don’t have the schematic/
service manual for the unit, I do have a DMM. Later I was told that the power supplies in these units
are enclosed and plug in to the main board, and from reading online, that the problem could be with
leaky/shorted diodes or filter capacitors in the rectification part of the circuit.

What specific components are defective here, and could you give me an idea what the circuit looks like,
so as to locate the parts, etc. ?

Thanx loads for your time, patience and help in this,

Chris Curran

Posted by on

1 Answer

  • Level 1:

    An expert who has achieved level 1.

    Corporal:

    An expert that has over 10 points.

    Problem Solver:

    An expert who has answered 5 questions.

  • Contributor
  • 15 Answers

On vcr power supplies usually first component to go is a capacitor, check if its blown, or test it if you have a meter capable, next check diodes and resistors, also check the resistors and diodes on all the boards( they may have blown if a cap has blown) If there was smoke or a smell its usually a resistor to look for. When you replace them replace them with a higher votage cap.. Example 15v 1000uF cap with a 25v -35v 1000uF cap( this is just to avoid the problem from happening again.

Posted on Feb 01, 2009

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

2 Answers

How to fix black screene sony tv


The main power supply regulator section circuit fault. Either it will be a separate board, or the part of main board. Check and replace damaged component/s at its main power regulator [SMPS] section circuit. Contact any service technician. If you wish to get some details; check the site linked here. Pull up older posts. http://electronicshelponline.blogspot.com/ It will be best to replace the power supply regulator board as card basis rather than making "Surgery" to it; which usually will make loss for both money and time. Even though you can make it right, it will cost around an amount equal to the cost of a new board; including the cost of (spare parts + service charge) More to say, most of the spare parts to it will be difficult to get from open electronic spare part market. This is true to most of the flat panel TV power supply boards; irrespective of its brand and screen size.
Search the site by type in the "brand name" to your device; in the "Search box at the top right of the display window of the Homepage" to get gathered related posts.

Jan 14, 2017 | Sony Televison & Video

3 Answers

My rca 50 inch tv wouldnt turn oon


Could be an open internal fuse or power supply failure

Jan 14, 2017 | RCA Televison & Video

1 Answer

I have a 37`` lcd rca flat screen model rlc4033.problem - no picture but sound is working.


Back - light problem. Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. It will be best to replace the inverter board as card basis. http://electronicshelponline.blogspot.com/ To some model sets; especially LED back-lighted types; the back-light inverter circuit will be part of the main power supply board [SMPS]. In such cases, the power supply board might need replacement. To some models sets, the back-light inverter and SMPS section circuit will be integrated at its main board itself. If so; the main board should be replaced. To some models of sets, all these section circuit will be integrated at its main board. If this is the case, you have to replace the main board.

Jan 13, 2017 | RCA Televison & Video

1 Answer

Rca touch screen constant flickering i cant get it past dogs on screen but even if the dogs are showing or rca logo it is still flickering colored lines how to fix thisis what i need to know


The main power supply regulator section circuit fault. Either it will be a separate board, or the part of main board. Check and replace damaged component/s at its main power regulator [SMPS] section circuit. Contact any service technician. If you wish to get some details; check the site linked here. Pull up older posts. http://electronicshelponline.blogspot.com/ It will be best to replace the power supply regulator board as card basis rather than making "Surgery" to it; which usually will make loss for both money and time. Even though you can make it right, it will cost around an amount equal to the cost of a new board; including the cost of (spare parts + service charge) More to say, most of the spare parts to it will be difficult to get from open electronic spare part market. This is true to most of the flat panel TV power supply boards; irrespective of its brand and screen size.

Jan 13, 2017 | RCA Televison & Video

1 Answer

Hi. I have a problem with my TV LG 55LA6230-TB We have picture for a while and then the screen goes black with normal sound. I would like to do DIY and need an advice.Thank you. Sam


Back - light problem. Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. It will be best to replace the inverter board as card basis. http://electro-medical.blogspot.com/
To some model sets; especially LED back-lighted types; the back-light inverter circuit will be part of the main power supply board [SMPS]. In such cases, the power supply board might need replacement. To some models sets, the back-light inverter and SMPS section circuit will be integrated at its main board itself. If so; the main board should be replaced. To some models of sets, all these section circuit will be integrated at its main board. If this is the case, you have to replace the main board.....

Jan 10, 2017 | Televison & Video

1 Answer

Samsung plasma TV model #pn42b400p3dxza problem with no image. The TV has sound but no image. I've tried using other components on the TV like RCA jacks with a separate TV digital tuner. Thank you


The main power supply regulator section circuit fault. Either it will be a separate board, or the part of main board. Check and replace damaged component/s at its main power regulator [SMPS] section circuit. Contact any service technician. If you wish to get some details; check the site linked here. Pull up older posts. http://electronicshelponline.blogspot.com/ It will be best to replace the power supply regulator board as card basis rather than making "Surgery" to it; which usually will make loss for both money and time. Even though you can make it right, it will cost around an amount equal to the cost of a new board; including the cost of (spare parts + service charge) More to say, most of the spare parts to it will be difficult to get from open electronic spare part market. This is true to most of the flat panel TV power supply boards; irrespective of its brand and screen size.
Search the site by type in the "brand name" to your device; in the "Search box at the top right of the display window of the Homepage" to get gathered related posts.
Check whether Va & Vs voltage come to the display panel, from the main power supply regulator board. If not, the SMPS board [power supply regulator board] is faulty.

Jan 08, 2017 | Samsung Televison & Video

2 Answers

I have a rca model led65g55r120q tv flickers and no sound


Check all cables for loose connection, try another input for picture (DVD, BLu-Ray, etc). If none of the other inputs work then it's a panel problem (display) If one or more of the others work then it's a problem with either the tuner or the signal.

Jan 02, 2017 | RCA Televison & Video

3 Answers

I have an RCA model LED42C45RQ with a blank screen. I have audio, no back lights, but I can see a picture on the screen with the flashlight test. What do you recommend replacing? Thanks


Back - light problem. Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. It will be best to replace the inverter board as card basis. http://electronicshelponline.blogspot.com/ To some model sets; especially LED back-lighted types; the back-light inverter circuit will be part of the main power supply board [SMPS]. In such cases, the power supply board might need replacement. To some models sets, the back-light inverter and SMPS section circuit will be integrated at its main board itself. If so; the main board should be replaced. To some models of sets, all these section circuit will be integrated at its main board. If this is the case, you have to replace the main board.

Dec 31, 2016 | RCA LED42C45RQ 42" LED TV 1920x1080, 60...

1 Answer

How to attach vcr to a tv using cable


attaching a VCR to a TV using cable is done with an RF modulator costing about 30 bucks from Walmartyou take the cable out from the VCR into the RF modulator. this device has RCA outputs separate video and audio that will go to your TV

Jul 14, 2014 | Televison & Video

Not finding what you are looking for?
Televison & Video Logo

92 people viewed this question

Ask a Question

Usually answered in minutes!

Top RCA Televison & Video Experts

The Knight
The Knight

Level 3 Expert

69845 Answers

matt martin
matt martin

Level 3 Expert

1198 Answers

Donald DCruz
Donald DCruz

Level 3 Expert

17129 Answers

Are you a RCA Televison and Video Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...