Question about Televison & Video

1 Answer

I have an optimus stav 3670 that won't turn on. I have located 3 fuse which all test good. No lights or sound when power button pushed. Continuity from plug end all the way to transformer. I'm hoping there is a 4th fuse that I can't locate. No hot spot failure observed on any of the pc boards. Any ideas would be appreciated. Thank you.

Posted by on

Ad

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Master
  • 794 Answers

Is your receiver plugged directly into a wall outlet; use your voltmeter (or in absence of one, a desk lamp or some other small appliance) into each of the duplex receptacles. I have gone on service calls where the outlet was defective- where one side of the duplex receptacle had power to it, while the lower branch was dead.
Or is your receiver plugged into a power strip / surge protector?
Check to make sure that the internal breaker (if so equipped) did not "trip". I would also check each of the outlets on the strip to make sure they have power going to them too. One could be out while the rest are fine.
The reason why I say this, is you mentioned you have continuity (the potential path for electricity to complete its circuit) but you did not mention if you are getting voltage (energized) from the plug to the transformer.
Check voltage readings at the power "on-off button too- remember, a switch is just a break in the line current. That may be defective.

Posted on Nov 25, 2013

  • Mike Pavay
    Mike Pavay Nov 26, 2013

    Thanks for the suggestion. I should have indicated that I had power too instead of just continuity. I've tested and used several outlets. When unit was working, pushing the power button would energize a "relay" (semi-loud click) and I get nothing at all. That is why I was wondering about a possible 4th fuse that I can't find. Any other thoughts would be appreciated. Thank you.

  •  John
    John Nov 27, 2013

    Mike I can't find any online wiring schematics for your receiver. I hope there is a diagram on the inside cover of yours. Most likely the "4th" fuse you are looking for are the fusible resistors used on the circuit board. Fusible resistors are resistors that are designed to "open" without flames when overloaded- they are sometimes called flameproof resistors. Reading the circuit board at pin outs R319, R320, R1319, and R1320 are 100 OHM (+5%) 1/4 watt fused resitors; so you'll have to take resistance readings at the component level. 4.7 OHM (+5%) 1/4 watt fusible resistors are used at pin outs R333, R334, R335, R336, R337, R338, R339, R340, R1333, R1334, R1335, R1336, R1337, R1338, R1339, and R1340- according to the parts list for your receiver. Hope this helps.

×

Ad

6 Suggested Answers

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

Ad
dgriswold10
  • 8 Answers

SOURCE: Mitsubishi WS-55819 55 in. medallion hd 1080

try to solder it first if dont work u can get the same part on yhe net

Posted on Oct 13, 2007

  • 1 Answer

SOURCE: mitsubishi WS-55909 dm board repair

I have a mitsubishi 48" integrated 1080. The Timer green light keeps blinking. I have no picture. Can this be the fuse? My coworkers say this might be the problem. Can I replace it myself? If so, where is it located?

meeh.shell@yahoo.com

Posted on Oct 16, 2008

  • 2 Answers

SOURCE: mitsubishi WS-55909 dm board repair

I have the same exact problem with the mitsubishi ws-55809 I get 2 blinks pause 2 blinks when I do the menu and input buttons but I have no idea what it means.

Posted on May 31, 2009

  • 11 Answers

SOURCE: mitsubishi WS-55909 dm board repair

I have the same TV and the error light code on my set is 22

Posted on Dec 13, 2009

  • 1 Answer

SOURCE: hitachi 50dx10b

water spilled on plug to tv,and it shut down. Plugged it back up, will power up,but no sound, or picture

Posted on Feb 02, 2010

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

I have an optimus stav 3670 stereo reciever that wont turn on. I have located 3 fuses, all test good. No lights, click, or any sound or reaction when power button pushed. I'm hoping there is a 4th fuse...


Mike, sounds as if it's not getting voltage to the remote control receiver circuit? Meaning that there is a low voltage (5volts) that sits there and waits for the signal from your remote to turn the unit on. This is also through the front power switch which is also tied to your on-off power relay. I would check for 5 volts around that. More that likely you a 5 volt regulator shot. Hope this may help?

Nov 25, 2013 | Dryers

1 Answer

Kenmore Elite Model 110.42926 202 after setting the desired cycle will not start when you push the start button


see this causes and fix it. God bless you
Incoming Power Problem If the washer won't start check to see if there is power at the electrical outlet which the washer is plugged into. Plug a lamp or radio into the outlet to check it. If the outlet is dead, check the circuit breakers or fuses for the home.

Power Cord If the washer won't start, check to be sure there is power to the electrical outlet for the home. If that is OK, the power cord itself might be defective. This is rare. You can check the power cord with an Ohm meter for continuity.
User Control and Display Board If the washer won't start, the user control and display board may be defective. Check for power to the washer first.



Timer If the washer won't start the timer might be defective. This part is often misdiagnosed, check other components before replacing this timer.



Line Fuse If the washer won't start the line fuse might have blown.



Thermal Fuse If the washer won't start the thermal fuse may have blown. It can be tested for continuity. Watch our fuse testing video for more information.



Line Fuse and Holder If the washer won't start the line fuse might have blown, or the line fuse holder might be damaged and need to be replaced.

Main Control Board If the washer won't start the main control board might be defective. This is not common. Check other parts and causes first.



Door or Lid Latch Assembly If the washer won't start the lid switch assembly might be defective. This is a very common problem. The lid switch assembly can fail either mechanically or electrically. Test any electrical switches with an Ohm meter for continuity. The switches should have continuity according to their design.



Door Lock Motor and Switch Assembly If the washer won't start the door lock assembly should be checked. The door lock can fail either mechanically or electrically. Test any switches on the door lock with an Ohm meter. The switches should have continuity according to their design.
10_5_2012_7_06_37_pm.jpg

Oct 05, 2012 | Kenmore Elite 45986 Front Load Washer

1 Answer

How i can connect a subwoofer to my Optimus Stav 3350,


Use a set of Bose speakers. The wiring goes from the speaker terminals on the amplifier to the sub. the right and left speakers connect to the sub.

Dec 29, 2011 | Optimus STAV-3350 Receiver

1 Answer

When I turn on the STAV-3770, after the five seconds for the inital click that is ready to go, the unit turns off and back on and keeps repeating this process.


Most of these units come with a replaceable fuse in the back (about the diameter of a penny). I believe that the unit will shut itself off if the fuse is blown. Excessive use, moisture or a power surge will blow the fuse. Radio shack may have a replacement for you to buy. I would try this first, as it is a fairly inexpensive solution. If it turns out that you have a more serious electrical problem with the unit, I would consider replacing it. The new 5.1 systems are cheaper than ever, more energy efficient and sound better to boot.

Sep 26, 2010 | Optimus STAV-3770 Receiver

1 Answer

Optimus STAV-3260 Digital Synthesized A/V Surround Receiver. this receiver has no power,not even a light for the standby.i already checked the fuse and its ok.


Could be several causes. Bad connection near the stand-by power transformer or the transformer itself could be open. The main Micro could be bad. This is a job best left to a servicer. Optimus was sold only by Radio Shack, they still do repairs.

Feb 03, 2010 | Optimus 31-3045 Receiver

1 Answer

''Power off ''flashes ten times after the receiver is turned on.


Most often it will require an output IC, but I have seen it be a bad ground or a transistor in the protect circuit.

Oct 16, 2009 | Optimus Audio Players & Recorders

2 Answers

Optimus receiver repair


The optimus receivers are made by Radio Shack go to their page to get some information to repair it.Good luck.

Jun 02, 2008 | Optimus STAV-3770 Receiver

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

Related Topics:

26 people viewed this question

Ask a Question

Usually answered in minutes!

Top Televison & Video Experts

The Knight
The Knight

Level 3 Expert

74245 Answers

Cindy Wells

Level 3 Expert

5127 Answers

Electro Med Services...
Electro Med Services...

Level 3 Expert

6694 Answers

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

Answer questions

Manuals & User Guides

Loading...