Question about Panasonic DMR-E85H DVD Recorder

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The two caps to peplace

All these stories about part numbers and their values and not one pici of them on the pcb ide like to replace mine but the numbers do not tally with the board. page after page on how to and not one photo cmon fellas give us diy ers a break regards

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  • bmol Feb 05, 2008

    i would love to see a pici of where these two caps are situated on the board if poss regards

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Http://vassfamily.net/projects/DMRE85H/dmre85h.html

not sure if this site is still up but some good pics here.

Posted on Feb 25, 2008

Thanks very much for pictorial. most interesting but not for my uk spec dmr 85 your cap location numbers are not the same ile keep searching though theres a pici somewhere regards

Posted on Feb 26, 2008

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1 Answer

What capacitor do i need to replace the old ones in DMR-E85R to fix the problem with "please wait"


Best bet is to replace all of the electrolytic capacitors in the power supply one by one, noting original capacitance values, and voltages (capacitance values are marked in µF as well as their voltage on their jackets), uprating the value/voltage where necessary, and observing polarity (the negative pole is marked by a stripe down one side of the cap, and replacements should have this opposite the + symbol on the board) when fitting new ones in the PSU.

It may also require replacement of IC1, a 12V 5 pin IC regulator, since this may have been partially damaged by the increased output voltage of the failing electrolytic caps in close proximity to it. This device has its type number (prefixed by STR) on its face, and should be available from Panasonic. Make sure if you order a replacement, that it is for THIS MODEL only, and that it is for the power supply in this unit.

Before you go out and buy a whole bunch of new electrolytic capacitors (available from most electronics stores including Radio Shack etc), take a visual look at the power supply (unplug unit from power point, and carefully remove the power board.) Examine it carefully, and note each capacitor that you can the value/voltage of - write it down, and obtain the closest replacements of each. Don't panic if you can't get a 20V 680µF, use a 25V 1000µF instead.

The total cost depends on how many electrolytic capacitors require replacing, but it is best to replace ALL of them one by one, to ensure reliability of the circuit they are in, in this case, the power supply. Don't worry about the IC regulator or any other parts just yet, do the caps first, as these are not terribly expensive, before taking any further action.

Jun 25, 2011 | Panasonic DMR-E85H DVD Recorder

1 Answer

What will be the problem when it is not showing power


No power is a typical failure of the switchmode power supply, which, unless you have sufficient knowledge of this circuit, requires a workshop service centre repair. Several components, including the most likely culprits (electrolytic capacitors) will need replacing. In extreme cases, the entire PCB will need to be replaced.

Bad caps are usually very easy to spot in most power supplies, look for crooked, swollen or bulging caps, and/or splits in their vents (the impressions in the tops of them) along with electrolyte spilling out (electrolyte is highly corrosive, so if any has leaked out of any caps onto the PCB, it may damage the copper tracks). Some may have dropped in value, some may be open-circuit (no capacitance at all), while others may have taken out one or more IC regulator and/or the chopper transistor(s); this could lead to an expensive repair, particularly if surface-mounted components on the copper side of the board are short-circuited.

NOTE: when servicing switchmode power supplies, with electrolytic capacitors, it is standard practice to replace ALL the caps in this circuit to ensure reliability and to minimise the likelihood of a service recall later - even if the ESR of some caps measures OK, they should still be replaced, and in a lot of cases, the working voltages and values of those capacitors which are replaced may be uprated/increased.

As I said, unless you have knowledge (and experience) with this type of circuit, submit your unit to an authorised repair centre, get a quote on the likely repair cost(s) and/or a second opinion from an authorised technician as to the extent of the fault(s) in your unit, then make a firm decision afterwards as to what you want to do about it.

It's up to you - either spend a fortune in repairs to this one, or, if it is NOT a DVD recorder, buy a new player - but only as a last resort. I suggest that you get the repair quote first before going any further.

Mar 31, 2011 | Panasonic Televison & Video

1 Answer

DMR-ES30VEB when copying VHS onto DVD, works for about 20 minutes, then whole unit suddenly shuts down, plus display goes off. Functions gradually return after about 20/30 mins. Thought it was bad discs,...


Shutdown? sounds like a power supply problem to me, and one of the likely causes would be the IC regulator (IC1) within it. The IC would have 3 to 5 pins on it, is probably marked as STRxxxxx (the x represents its type number), and probably has intermittent partial internal failure, causing the symptoms you describe. With the whole combo unplugged from the wall, remove the top cover, locate this little device, note its type/part number, find out cost of the part, replace it, observing its pin orientation on the PCB.

You might also like to check all of the electrolytic capacitors on this board too to be sure - and replace every one of them. Capacitors are one of the biggest troublemakers in any power circuit, especially electrolytic types located near components which emit heat (such as ICs and transformers). You may need to (carefully) remove the DVD drive to gain access to the power sub-board underneath. Once the sub-board is out, you can examine it more closely, and do as above. The IC regulators in this series were usually rated around 12V or so, and for the most part, were reliable. Caps are cheap enough - just note the values of the originals before buying new ones, perhaps uprate the working voltages of some to be safe. Electrolytics have a negative stripe on one side of the 'cylinder' or 'can' - so observe their polarity when replacing - the positive (+) of the cap must match the (+) point on the board.

The good news is that this may not be a really expensive repair for an otherwise functioning DVD recorder, and at this stage, is confined to one circuit. However, this is just advice from my experience. Your best option is to order the correct part number for the IC due to its voltage rating and the internal components in it. The part cost will depend on who you deal with. Don't forget to check the power sub-board for dry soldering, cracks, burn marks around components, etc. Worth saving.

Feb 18, 2011 | Panasonic DMRES30V DVD Recorder/VCR Combo

2 Answers

Where to replace burnt out PCB.


ok if you check the board-boards and replace all
the caps that have vented (expanded) with new ones. you may be in good shape then!

Jun 19, 2009 | Sansui VRDVD5000 DVD Recorder/VCR

3 Answers

Re: Onkyo DV-CP500 DVD player stuck in standby mode (by 7 users)


Hi Yes, sorry just saw this comment. Swap out C7, C17 and C18 in the power supply. Also I would check if you are getting 9Volts to the motor control IC's pin 7 coming off of C005 on the Mechanism Board which is under the unit. The hole for the C005 cap was drilled into a very narrow section of the circuit board and has marginal connection at best.. mine stopped working because of this 6 months after I fixed the power supply.

Oct 23, 2008 | Onkyo DV-CP500 Multi-disc DVD Player

2 Answers

Resister burnt


Guest and Lesfix. RU83 located on the DRC8335 VCR PCB is a 51ohm 1/4 watt 5% tolerence resistor, color coded green-brown-black-gold. As to zener diode DU83, I haven't been able to determine it's value yet but am working on the problem.

Be aware when either or both these components fry, this indicates you need to replace the following two overheating capacitors on the power-supply board, which were directly resonsibile for knocking them out:

• C216 1000µf 16 volt (upgrade to 35 volts)
• C218 1000µf 10 volt (upgrade to 35 volts)

Could you email me regarding this problem when you have time. Mention Fixya and DU83 in the subject line so I realize it's from you. Thanks. mikeadams110@yahoo.com

Oct 02, 2008 | RCA DRC8335

2 Answers

Power on but nothing else


My DVD22 did exactly the same. The solution mentioned by shelompidid not apply to me since my model already had the fix factory fitted.

The other problem mentioned on page 21 of the service manual did the trick for me, although the complaint does not seem to be directly relavant:

"Complaint: Will Not Read Disc; Other Functions May Be Disabled
See h/k service bulletins HK2004-03 and HK2005-02, as the issues covered there involve similar
symptoms.
Probable Cause: EC19 and EC20 (1000μf 16v capacitors) may be defective in the power supply. This can be checked by measuring the +3.3v and +5v voltages that are associated with EC19, 20 to see if they are low (more than 0.1v low). The SPMS output voltages are marked on the PCB adjacent to the large 13 pin header. While there is only one 3.3v pin, there are several +5v pins, and care should be taken to measure the correct one(s), which are either two +5v pins approximately in the center of the header.

I could actually see on the power supply board that these two caps were damaged, although they were not completely popped. An additional cap which was damaged on my board was EC4.

When I measured the voltages the middle D +5V was reading about 4,6V. I did not expect a problem until I read the statement above on page 21 stating it should not be low by more than 0,1V. My A+14 and A-14 voltages also read about +/-17 to +/-18V.

I replaced all three caps: EC4, EC19 and EC20 with 25V caps instead of 16V caps. The voltage for D +5V now read exactly 5,01V! The A+/-14 read +/-16V (some improvement).

My unit is operating fine after replacing these 3 caps! I suspect that the damage to the caps could have been spikes on the AC suppy some stage, maybe due to lightning. Pretty amazing that only the power supply have damage and not the main pcb.

May 06, 2008 | Harman Kardon DVD-22 DVD Player

6 Answers

Polaroid DRA-01601A will not power up


99.9 % of the times its the capacitor which is blown. I had spent few weeks to investigate on this and ultimately found this solution. Till date I have replace two capacitors. To determine which capacitor is gone, Check on the flat silver surface of capacitor. If its not 100% flat it means its gone and you need replacement. Pl. check my attached file to understand on details of inside configuration.

Hopefully it works for you.


I am not able to upload pdf which I have created. Pl. contact me via email to get pdf file
viki_3578@yahoo.com

Regards,
viki_3578

Feb 16, 2008 | Televison & Video

3 Answers

Protron pd-dvr100


Fixed mine by opening up and replacing ide cable to the DVD burner. Was flashing hello. When opened up and touched the ide cable it would spin up the drive for a second. Its possible it was loose connection to the power plug in the drive but replaced ide cable just in case. Has been working perfect since. Very roomy inside and easy to do.

Feb 08, 2008 | Protron PD-DVR100 DVD Recorder

4 Answers

Dvd player wont turn on


One of the previous posts is correct. There was a problem with Electolytic capacitors about 4-5 years ago, which is suppose to be fix now. Many companies tried to get in the business, but did not have the proper formula for them. This left the caps unstable. The caps could last for a week or for years before failing. This affected a lot of electronics from the high priced models to the cheaper. My computer at work (a Dell) and at home had the same problem. There is not a way to tell if a cap is from a bad lot, although there probably a list somewhere. When I'm fixing one I replace all the caps that are from the same manufacturer and same value as the blown one.

One day at work I saw a CyberHome 300 in the recycle bin (someone probably brought it in to fix it and failed). I pulled it out and of course it would not power up. Knowing about the cap problem, I opened it up and sure enough 2 caps were "pillowed" on the top. When a electrolytic blows it may vent out the top creating a noticeable bulge on the top. Replacing the two caps, the unit works great. If you'd like to know more email me at gpb531@yahoo.com

Aug 16, 2007 | Cyberhome CH-DVD 300 DVD Player

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