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Yahoo Bid Home Appliances, Audio & Video, Camera Audio Equipment Amplifiers Tube Amplifiers Parts
LUX PZ24 プリアンプ 真空管 動作品
        

  • Product Quantity
    : 1
  • Starting Bid
    :5,000円
  • Highest Bidder
    : ゴンタ / Rating:757
  • Listing Date
    :2026年03月16日 07時29分
  • Bidding closes on
    :2026年03月22日 20時29分
  • Auction Number
    :c1222922149
  • Condition
    :Damaged and stained (specify in description)
  • Automatic Extension
    :Yes
  • Authentication
    :No
  • Early Closing
    :Yes
  • Can I return the product?
    :no
  • Description
  • Q&A ()
  • Cost Estimator
  • Problem Item Response Procedur
購入したものの、使用できなかったので修理しました。
以下、修理内容です。

---------------------------------------------------
 ボリュームが絞り切れない以外良い状態となっています。
 (劣化してリークのあったカップリングコンデンサを交換したことで電気的性能は大幅に 改善、初期のレベルに戻ったと思います。また、当初から出ていたと思われる、入力やトー ンを切替えた時の大きなノイズ(バツッ!音)を無くしました)


<不具合内容>
 ①雑音(ハム、ノイズ)が多い。
 ② ファンクションやトーンなど切替え時ショックノイズが大きい。
 ③ ボリウム0でも音が出ている (-30dBほど、LR共に絞り切れない)。


<原因>
 ① カップリングコンデンサのリークにより真空管の動作点がずれたため。
 ② 当時の設計はノイズ対策をしていなかったため。
 ③ ボリウム不良(経年変化で抵抗分が増加・・・本来0Ωのところ約30kΩ).

<対策> (見にくいですが回路図を参照して下さい)
 ① カップリングコンデンサ全数交換(12ケ)。
 ② コンデンサ6個 (と抵抗) 追加 (→切り替え時の電位差を無くす)。
 ③ 不可(部品は現在入手不可、摺動部のクリーニングでは直らず)。
 →ボリウム0での音量が大きい場合、後ろに接がるパワーアンプのポリウムを適宜校 って下さい。

<効果>(初期値と仕上がりのデータを参照願います) 
・対策①により雑音以外に歪率やPHONO RIAA 偏差が改善、当初の特性に戻りました。 
・対策②により入力切替時などに発生していた大きなポップ音 (バツッ! 音)は気になら ないレベルまで小さくなりました。 

 また、プリアンプ出力端子に接続されているコンデンサ (0.47uF)の容量抜けで低域が出てい なかったので交換しました。

外観は比較的きれいなほうだと思います。
画像にご確認ください。
質問にはお答えしかねますのでご了承ください。
以上ご理解のある方のみのご入札をお待ちしてます。


【注意事項】
※評価のない方(初回取引)、悪い評価が多い方(内容にて判断させて頂きます。)の入札は削除させていただきます。
※入札いただいた方の評価状況によりご入札の取り消しをさせて頂く場合がありますのでご理解願います。
※落札されて2日以内に入金確認がない場合はキャンセルさせて頂きますのでよろしくお願い致します。
※状況により早期終了する場合がございます。
※発送はゆうぱっく着払いでお願いします。

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Product Price JPY
Japanese Consumption Tax(10%) JPY

A 10% consumption tax is applied to goods and services in Japan. The price may include the tax or it may be added separately. Please check the price details when ordering.

Note: This is a domestic sales tax applied within Japan.

Japan Local Shipping Fee JPY Japan Local Shipping Fee Reference
Product Weight KG The maximum weight limit is 30 kg
International Shipping Methods
Proxy bidding and purchasing services are becoming increasingly convenient. However, overseas shopping carries certain risks and issues. To reduce these risks and enhance shopping safety, please be sure to read the following information:

1. International Shipping

   Air Freight: If the item status is not confirmed within two days after the arrival notice, any customer complaints cannot be addressed with the seller.

2. After Receiving the Product

Please confirm and inspect the product as soon as possible to ensure that the product specifications, quantity, accessories, and description are correct

If, unfortunately, there are any issues, you can refer to the following examples on how to report related product problems:
1. Example of missing product information
2. Example of product not matching provided information
3. Example of damaged product information

Important Notes: 1. If the seller is unwilling to ship overseas or is unaware that the product will be shipped overseas, the international shipping cost for returns or exchanges will need to be borne by the member. You may refer to the EMS e-Express fee inquiry from the post office. If it involves alcoholic beverages or items that affect flight safety, the post office cannot be used for shipment, and only DHL can be used to ship back to Japan.
2. During the product complaint handling period, please retain the complete outer packaging of the product (including the shipping label information), and refrain from attempting any repairs or altering the original condition. Any modifications may result in the inability to process the case.

3. After Inspecting the Product

After receiving and inspecting the item, if you have any questions, it is recommended to contact Letao within 2 hours. Here are some reminders:

1. Please do not unpack, use or repair the received item yourself, and be sure to keep the original packaging to facilitate subsequent handling of related matters, so as to avoid changes to the item that may cause the seller to be unwilling to process.

2. You can call customer service, and the customer service will leave a message for you as below. Please provide the following information:
"Hello, we will first help you establish a complaint case for Product ID: _______ .But we need you to 2-3 clear photos of the product issue, including photos of the product problem, product packaging, shipping details slip, and outer box. Send them to service@letao.my and inform us of your desired resolution (failing to provide this may result in an inability to process subsequent matters). After sending the email, notify us in the customer service message. We will confirm with the seller as soon as possible. and if there are any related questions, we will contact you through the customer service message. Thank you for your cooperation."

Please provide:
1. "Product ID"
2. Photo of the "Delivery Note" (if any)
3. Photos of the outer box (including inner and outer packaging)
4. Photos of the product (Please include relevant descriptions to help us confirm with the seller)

Important Notes:
1. Do not include foreign text or other products in the background of the image.
2. Please keep the complete product packaging (including the shipping label information), and refrain from repairing or altering the original condition on your own, as any changes may result in the case being unable to be processed.
3. Please provide the relevant information within 48 hours to avoid missing the golden hour for reflection and causing situations that cannot be handled.
4. Due to 99% of Japanese sellers being unwilling or unaware of shipping goods overseas, if a seller is willing to handle the issue, the goods must be sent back to Japan, and the international shipping costs incurred must be borne by the member. Letao will use postal EMS international express to send the goods back to Japan.
5. As the goods are purchased from overseas, it may take approximately one to two weeks to complete the relevant processing procedures when issues arise with the goods. Please be reminded that you can inquire about the approximate cost through the EMS service at the post office.

4. FAQ

1. Issue of Authenticity: If antique or branded goods are found to be counterfeit upon receipt, clear photos showing the differences between the genuine product and the imitation must be provided as evidence. If unable to provide relevant proof, assistance can be sought to find a third-party reputable organization for a premium authentication service .
2. Leaking Iron Teapot: If an antique iron teapot is leaking, please take clear photos of the leaking area and provide them.
3. Transport Damage: If the goods are damaged during international shipping (to the pickup point), you need to provide photos of the outer packaging of the parcel and clear photos of the damaged goods' outer packaging.

※ Note: Photos provided to sellers should not contain any foreign-related information.
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    Product name: LUX PZ24 プリアンプ 真空管 動作品
    Notes:
    Customer service hours:
    • Monday to Friday 10:00-18:00
    Customer service hotline:
    Customer Service Email: service@letao.my