Denon AV Receiver Repair AVR-1804 Blown transistors, resistors and other stuff

Denon AV Receiver Repair AVR-1804 Blown transistors, resistors and other stuff | UK eBay Reseller

Рет қаралды 7,823

Жыл бұрын

In picked up the Denon AVR-1804 AV Receiver amplifier for £5 with the gaming haul I got a few weeks back. Upon testing the speakers were humming/buzzing and for that there was DC voltage on the speaker outputs. most of the channels were blown and we test to see if we can get this one working by using components from the good channel until the new components arrive.
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Пікірлер: 19

@BronzeHandPhotograph Ай бұрын

Thank you for this informative video. It helped me a lot !

@chris-pike 6 ай бұрын

Just catching up on your fixes there i noticed you have changed your channel name now , but another interesting repair and Happy New Year all the best for 2024 Lee 👍

@RetroElectronicRepair 6 ай бұрын

Thanks Chris, Happy New Year to you too. Yeah I changed the channel name to reflect more of what I do. Hope to get some more vids up soon. Thanks for watching and commenting 👍

@chris-pike 6 ай бұрын

@@RetroElectronicRepair Thanks Lee look forward more of your fixes to come then mate 👍

@snoopythecat3741 11 ай бұрын

I'll get one for investigation and I think it has the same problem. Partially working amplifiers. Thank you for this video, it will help me a lot.

@RetroElectronicRepair 11 ай бұрын

I've still not got round to ordering the parts and finishing this one yet but hopefully soon.

@snoopythecat3741 11 ай бұрын

@@RetroElectronicRepairOne output transistor 2SB1560 of the of the Centre channel amp was blown. I replaced both 2SB1560 and 2SD2389 with the 2SB1559 and 2SD2389 from an old Marantz receiver. Almost the same only these are 80W (SOA) types and the originals are 100W (SOA) types, voltages are the same. Therefore only 8 to 16 Ohm speakers are possible to keep these alive. Test on a moderate volume level shows no problem with the dissipation.

@michelbrasseur9296 11 ай бұрын

Hi ! Great Video , where did you find the schematic for this amp ?

@RetroElectronicRepair 11 ай бұрын

Thank You. Just search Google for denon avr-1804 service manual. It was either manualslib or elektrotanya

@romaindemaison3127 Жыл бұрын

Hi, where did you buy your resistors ? I am trying to fix a Denon amplifier but I can't find original resistors at good value, I found them between 4-8 €. I think I will go with regular metal film resistors

@RetroElectronicRepair Жыл бұрын

The resistors I bought from CPC cpc.farnell.com/ They were £1.40 for 20 of them + shipping and the transistors I have ordered from AliExpress.

@romaindemaison3127 Жыл бұрын

@@RetroElectronicRepair thanks, do you have a part number exemple that you ordered ?

@RetroElectronicRepair Жыл бұрын

These are the ones I ordered but they are out of stock now cpc.farnell.com/multicomp/mcknp01wj022ka10/resistor-wirewound-0r22-5-1w/dp/RE07257. The 4.7ohm resistors (I think that's what they were) I ordered from eBay so no part numbers for those.

@doubts72 Жыл бұрын

Hello can you help me diagnose my Denon Av Receiver ? My son was playing video games and all of a sudden there’s a loud clacking noise coming from the surround speakers when there’s a loud scene like cars racing there clackle and goes away at lower volumes . I tried another set of speakers with higher watts and it still does it, so I’m sure it’s not that the speakers are blown . Am I screwed here ? I can send you a video to your email ? Please help . I’ve looked on you tube but none seem to have the issue like mine .

@RetroElectronicRepair Жыл бұрын

Sorry but I'm not sure what that could be. I'm not an expert at electronics and just do this stuff as a hobby. I only really know some basic stuff. Sorry I couldn't be more help.

@davidwilliams2840 Жыл бұрын

Unfortunately all the time & effort you put into fixing it is wasted as they go for peanuts now nobody wants the older technology especially when he comes to AV amps ...

@RetroElectronicRepair Жыл бұрын

That is very true, but this is good practice for me to learn and might help someone fix their receiver. I usually prefer the older vintage amps, they still sell for really good money. It also saves it from landfill and someone might want a bargain cheap receiver. I'm sure I can sell this and still make a bit of profit but we will see. Stay tuned to see if I fully fix it and if it sells. Thanks for watching and for the comment. 👍

@snoopythecat3741 11 ай бұрын

@@RetroElectronicRepairI repair them for the same reason and only as a hobby. It is a waste to dump them for destruction.

@RetroElectronicRepair 11 ай бұрын

@snoopythecat3741 thank you for watching and commenting 👍 keep on fixing.