Trying to fix a Pioneer Elite DV47ai DVD player

[Dave Sal]

Hello all,
I just found this forum after trying to figure out what to do to repair my old DVD player. I bought this thing new back in 1999 for around $1200, and instead of tossing it in the trash I am trying to figure out what happened and how to fix it. It's worked flawlessly for about 15 years and then I moved it out of my equipment rack and replaced it with a high definition player. It's been stored in my bedroom since then until late last year when I decided to put it back in service. Once hooked up it worked perfectly. Fast forward to a few days ago. I wanted to do an A/B comparison between a CD and a SuperAudio CD for my son, and went to power it on but got nothing. I noticed at that time that the red standby light was not on. I unplugged it from the power strip, waited 10 seconds and plugged it back in and still nothing. The outlet was working fine, so I assumed that a power surge from a few weeks ago when we lost power for an hour may have fried something. Today I removed the cover and pulled the fuse and used a meter and it showed it was working. I found a few discussions on various forums saying that resistor 74 on the power supply board is known to go bad and many people have replaced that and got their players working again. I have no experience with electronics and am wondering if anyone could guide me to purchasing the correct resistor. The forums are saying it is resistor 74, and is 2m2. It has a four stripes, maroon (or purple), green, red, red. If anyone knows which one to get and where to purchase from I would appreciate it. Thanks

[jwet]

I'll try.  That resistor should be read the other way most likely- its would be red red green (2 2 5), the 4th stripe is a tolerance - 5%.  That is a 2.2 Megohm resistor.  Its looks to be 1/4 watt.  Not long ago, you could go to Radio Shack to get stuff like this.  Now you need an electronics store of some kind or on line.  A single resistor is about a quarter sold as onesies.  The real cost of an R is pennies and anyone would give you one if they have parts lying around.  If you have no luck, I could mail you one. 

It would surprise me if that is the issue, such high resistances seldom cause problems.  Most problems are caused by heat and low resistances usually run hot and give out.  2.2M is a big value.  But, if this is  the common wisdom is to replace it then do it- its worth a quarter...

I assume you have a decent soldering iron and a solder sucker to remove the old part.  If not, you can clip i the leads on R74 and just tack a part on what's left of the leads.  You could clean this up late if it works.  Keep a little bit of leads on the old part so you can measure it with an ohmmeter- its should be 2.2M +- 10%, likely not critical.  The biggest danger is getting things too hot.  This can lift pads off the PCB, etc.  All this can be fixed, don't panic but go slow.  Use decent solder and a little rosin type flux.  You'll also need rosin core solder for electronics.

With this units history, its very common for electrolytic caps to either leak or dry out.  These are usually little radial leaded (two leads out one end) or axial (lead per end) with a plastic label on them.  The parameters that matter are value say 100 uF and voltage rating say 35v.  Both should be clearly marked.  These parts are polarised and they'll have a stripe or some marking that identifiies plus and minus- the board should have some indication too.  Take pictures as you do things so you can get back to where you started.

Good luck- I'll check this thread.

[Dave Sal]

Thanks for the reply jwet. This is the link that I was reading that lead me to resistor 74 on the power supply being the issue:

https://www.diyaudio.com/community/threads/pioneer-dv-355-ps-problem.49806/

Looks like quite a few of the people in that thread are from Australia and are buying their resistors at Jaycar, which is apparently an Aussie electronics store. I was considering purchasing a new power supply but so far haven't had any luck in finding one online. The Pioneer website shows them as no longer available. Besides, the links that I saw showed the prices around $125 (but no longer in stock), which is half the cost of a new high definition Sony BluRay player, so I'm hesitant to spend that amount without knowing if it would solve the problem. The link also talks about the power supply in the DVD player model DV-355 as being #VWR1364, but mine is a different model (DV-47) and has power supply #VWR1361. Both are from Pioneer Electronics DVD players so I don't know how much of a difference there may be. Thanks for pointing out that I was reading the resistor colors backwards. Could you provide a link to Amazon with the correct resistor so I know which one to buy? I appreciate you taking the time to reply.

[jwet]

I think with Amazon, you'd have to buy a kit of resistors.  You get 300 assorted values for $10.  Alternative, I could put a couple in an envelope- PM me your snail mail if you want to do this.

The first amazon kit I found, was this- there are many.  You want 1/4W 2.2M

https://www.amazon.com/sspa/click?ie=UTF8&spc=MTo4NjExMjM3MDYyNTQzMDEyOjE3Mzk2Mzk4NzE6c3BfYXRmOjIwMDAzNzEwMzU2NDMyMTo6MDo6&url=%2FBOJACK-Values-Resistor-Resistors-Assortment%2Fdp%2FB08FD1XVL6%2Fref%3Dsr_1_1_sspa%3Fcrid%3D1FL0ZUZ15QFVP%26dib%3DeyJ2IjoiMSJ9.zwvaZrTLU3vn-R-k3rdlaC12rl9Tn3zGCopGlr2BYI8oLB0G2fEG8yzkmv7QPSS9mH5N2yDhKItlJtXrLzsnKuhxQI9pE9qE2bH3FHHvNbdDDZSss1IqtSOMX_RiQ44_M20kq8pvru0fhwGGnEXKb0ddmU9zkkrqE-f6idGIXBvZFHwIVxm6RbxXtmvfzRzQ8OlIIDj5id53A8YHmeewg86EaTMeQeO0jkw_GrpRofU.STIxKw4X6h6cvCNkO9wF-yWfVZj_XRQY3tLdFYEEpzw%26dib_tag%3Dse%26keywords%3Dresistor%26qid%3D1739639871%26sprefix%3Dresistor%252Caps%252C98%26sr%3D8-1-spons%26sp_csd%3Dd2lkZ2V0TmFtZT1zcF9hdGY%26psc%3D1


DON'T BUY THIS ONE- IT ONLY GOES TO 1M, several go to 10M, 2.2M is a stanard value.  If you already pulled the trigger, put two 1 megs in series- close enough.

[Dave Sal]

Jwet, you're very kind to offer to send me these resistors. I truly am grateful for the offer. My adult son already purchased a ten pack so we're going to attempt to change it on his next day off. I've got my fingers crossed that this will fix the problem. If not, I'm probably just going to pick up a new Sony Blu-Ray player and be done with it. Thanks again for your generous offer. I'll post again updating the outcome of our repair attempt.

[jwet]

Checking on progress- have you done the deed?  Good luck.

My sister married a Turk.  Her son, my nephew uses "Sal" as his last name for business.  His real name is a long Turkish name- Salavatcioglu, <son of Salavat>.  He's second generation.  Is your "Sal" a similar shortening?  Just curious.

[Dave Sal]

The deed has not been done yet. My son will be off for four days starting on Friday I believe. We're gonna try working on it then.

Not Turkish. My mom was German and my dad was Mexican-American. They met when he was in the Army stationed in Germany in the early 50's.

[Sassy Taste]

I have a Sony DVD player just about the same time period 1999.  I checked, 4 of the resistors are already blown.  Not sure if that was the only problem.  If I had to test capacitors, Too costly to even attempt to replace those capacitors.  I figured just get a new DVD player rather than attempt to fix this old DVD player.

[Dave Sal]

Quick update. My son was on his days off today and we both had the time to finally get around to working on this repair. He had a brand new soldering kit that he bought on Amazon a few months ago and it sure came in handy. The new resistor was pretty big compared to the original, but we got the old one off and the new one soldered in place in about 10 minutes. Reinstalled the power supply and plugged it into the wall socket. Pressed the power button and it came back to life. I reinstalled the cover, put it back in my audio rack, made the connections and then popped in a few SACD's to test it out. It sounds great and I am grateful for my son's help, as well as the information provided by jwet. Truly appreciated.

[jwet]

Wow- great news.  Congratulations and thanks for the follow up- I'm always curious what happens to my ether friends.  Enjoy!