Question about Audio Players & Recorders

1 Answer

Valve (tube)ECC85 does not light up ,despite having tried 6 new different ones. could a resistor or capacitor,have gone? Help! I love my radio on this gram. although all other visible valves lightup and work, ,and there is the usual lovelt hum when switched on, I have nothing else. would you by any chance have a circuit Diagram, for the Blaupunkt Radiogram Model Arkansa De Luxe, about 1972? in anticipation. Freda Ruderham . Jersey, UK

Posted by on

  • Qigong Jul 30, 2008



    ok. this was very helpful, what I really need is a circuit diagram, so that I can take out of situ, to be able to see better, I can fix the soldering ok, IF I can get at it, but without a diagram, I am scuppered !!



    in hope. and with thanks.

    Freda Ruderham.

    Jersey UK



  • Qigong Jul 30, 2008

    I do not know yet if it was helpful, as I could not get into the site, i shall try again shortly.

    thanks
    Freda Ruderham

×

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Master
  • 19,396 Answers

Check that the valve itself is not faulty, I see if I can find diagrams

Posted on Jul 30, 2008

×

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:

1 Answer

My phillips tv comes on, the sound works but the screen is black. whats wrong?


Different things can be a bad soldered coil in the backlightinverter sometimes an interference suppression coil that are bad soldered ie that the wire is not good enough was degummed.
But also look for bulget topped capacitors on the printboard or broken fuse resistors resistors that placed most times slightly different on the print sometimes higher from the print or with one leg standing up with a porcelain bead on one leg ,or normal placed.
on top and bottom there are most times 2 backlight ccfl tube lamps a rail with 2 tubes up and a rail with 2 tube down remove the mounting screws of the tube-rail from upper top of the schreen and the tube rails pulls out slightly a little so you can watch it and start the TV to see whether that be for a couple of seconds startup or at most as it flashes. to see whether the high voltage step-up transformers to work, which means that he goes in securitymode then there will be one or more capacitors may be defective on the backlight inverter. if you manipulate some components on the print take some piece of wood to push on print or components because of the possible bad solderings. repair is better then new prints sometimes because you repair with much better toleranced parts if you have a capactor bad from 16 volts replace them by parts of 25 or 35 v thats better because the original parts are have to tight tolerances on any part to build as cheep possible.

Feb 16, 2016 | Philips Televison & Video

1 Answer

My line 6 spider mk 11 starts making a cracking noise about 50-60 seconds after i turn it on, then loud fuzz noise- whats wrong plz help


Disable ALL digital settings....problem gone? If not, with tube guards and/or shileds removed try lightly tapping on each tube (one at a time). Does your amp go crazy while tapping one particular tube? If yes then it is new tube time.

Oct 18, 2012 | Line 6 Spider Valve 112 MkII 40 watt 1x12...

2 Answers

My peavey 3120 guitar amplifier head is not producing sound. no hiss or hum at any volume. all the indicating lights come on. all the tubes glow as they should. what is wrong?


HI.... I'm a tech AND guitar player. Tubes may light but not work.
Take it to a amp repair guy that has a tube tester
Otherwise you could spend BIG $$ on lots of tubes

Aug 18, 2010 | Audio Players & Recorders

2 Answers

1999 buick century odometer light does not work


this is a common problem and the dash cluster must be removed and sent out for repair, cost is about $175 to replace the LED (Light emitting diode) display that has burned out, this is a faxtory defect as far as this expert is concerned, it is not a fuse problem.

Jun 13, 2010 | 1999 Buick Century

1 Answer

I have a Northstar NS3000 10 meter radio and I can't figure out how the talk back mod was added. I want to install an on/off or at least disable it all together. Any ideas?


Look on the bottom of th board near the audio chip you will see a resistor or a resistor and Capacitor combination just laying on the board tack soldered to it. Heat and lift one end turn the radio back on and see if the talk back is gone. If so install your switch there.

May 14, 2010 | Galaxy Radios DX-66V Base CB Radio

1 Answer

Picture's gone--sounds fine!


This is very likely not the picture tube. I suspect that something in the vertical oscillator section has gone bad. You will need to get the schematics for this set. Locate the vertical section and look at the transistors and IC's to see if they are still good. Also check for bad solder joints and open resistors. You can do all the checking with a simple Digital Volt Meter. You can get all the info you need online for how to test transistors, diodes, electrolytic capacitors and resistors. Most of my TV fixes have involved bad solder joints that have gone bad after years of hot/cold cycles , usually under a component that gets hot (heat sync) , resistor, or heavy item such as a transformer. The other issues are usually with transistors or IC's that have gone bad due to power surges or age degradation. Sometimes fuseable resistors open open. Sorry I can't be more specific. There are too many things to check. Could also be a power supply issue. but highly unlikely if you still have a center line. TV tubes hardly ever go bad unless the set is very old.

Apr 19, 2009 | Televison & Video

2 Answers

Guitar amp no sound or lighting


Ah yes: complete catastrophe. Usually when everything is not working, it is a single reason and when that single reason is fixed, so is the amp.

Based on what you tell me, I am going to say you have a bad power tube. And I will even go as far to say that you buy a set of tubes and play on them as long as you can. If so, then you not only burned up the tube, but weakened the power section and may have a slooow tube frier. I always tell customers: modern tubes have an effective life of less that 1200 or so hours and that varies. Replace the tubes once per year if you gig with the amp: period. Otherwise, guys like me (doing repairs) stay busy and the tube companies get rich selling tubes to amps with weakened power sections.
It sounds like you burned a power tube and blew a fuse. First, you need a new set of power tubes and some extra fuses (go to Radio Shack and set the value you need in SLOW BLOW fuses).
Then, replace all the power tubes. Don't worry about biasing yet, we are just seeing if there is a problem. Next, replace the fuse.
Turn on the amp and play on it at various volumes and settings. If all is well, take the amp to a tech and get it rebiased. If you can afford it, pay to have the grid/plate and other resistors changed so the power section will be like new (clean slate with new tubes). Your amp will love you for it.
Almost all of the amps I have worked on for performance problems (cant keep tubes to stay alive for very long) are directly related to end user use. When you use a tube until it blows it ALWAYS TAKES SOMETHING WITH THE TUBE WHEN IT GOES (like the power section components). The compents will be weakened and the tubes will 'wear' at different rates that can even move them out of the 20% tolerence they must be within to sound good. 99% of the time a board repair with a retube after a catastrophe fixes the amp until the next time it is 'run into the ground'. Tube amps are NOT invinceble: they are weak compared to solid state and expensive to own. But we love tubes because they sound great. I have solid state to knock around on, when when it counts, I play only with tubes. I have spent hundreds on good tubes because you do get what you pay for.

Hope this helps!
-mike

Mar 14, 2009 | Music

3 Answers

Schematic (or just R10) for Rampage AMP522A Car Audio Amplifier


2 years later... I just picked one of these up at a yard sale... R10 is actually a diode. The code is buried, but ends in N1.
Hope this helps!

Sep 14, 2008 | Audiovox AMP522A Car Audio Amplifier

1 Answer

Excalibur SSB base radio will work fine one day,not the next.


Might be worth checking the microphone cable on the transceiver, specially near the plug, or the push to talk switch. I saw this umpteen years ago with a CB that was intermittent.

High voltage capacitors are a bit hard to find but look on the net for vintage radio suppliers. While you have the tube radio open, look for resistors that gone high, this can put higher voltages than design on the caps and of course can quickly wreck tubes that were otherwise OK.

Apr 27, 2008 | Radio Communications

3 Answers

Hitachi 43fwx20b convergence repair help needed


In all probability, the resistors are effectively fuses and were "blown" when the original STKs went bad. Repalce the resistors and you should have your good picture back.
Dan

Mar 17, 2008 | Hitachi 43FWX20B 43" Rear Projection...

Not finding what you are looking for?
Audio Players & Recorders Logo

Related Topics:

139 people viewed this question

Ask a Question

Usually answered in minutes!

Top Audio Players & Recorders Experts

kakima

Level 3 Expert

102366 Answers

 Grubhead
Grubhead

Level 3 Expert

4852 Answers

The Knight
The Knight

Level 3 Expert

72620 Answers

Are you an Audio Player and Recorder Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...